The goat burger analogy is sound. Television is not art, it is art-business. Parker is not just a writer, he is also a producer. You have to separate the two. As producer, it is literally part of his job to maintain the quality of the show. As a writer, it is his job to produce the best scripts that he can. He doesn't do either.
Likewise, a builder isn't going to forget how to build and pilot isn't going to forget how to fly and an accountant isn't go to forget how to do books.
If I hire a builder, I expect them to do their best. That is all. I am not insisting that Trey must do something beyond his capabilities. I am insisting that he should try, to the best of his ability, to produce what is contractually and ethically obligated to produce. I do not believe that Trey Parker is incapable of writing a decent episode, and - as I said - he has over two dozen other writers to turn to, if indeed he is. Your assertion that he has "forgotten" how to write, and "simply cannot make it funny" is incorrect. He produces the script within one week of it airing. While it is extraordinary that he has managed to do this for over ten years considering the high quality of the program, perhaps it is time to take a little bit longer. The amount of money he is being paid, it is not justifiable to just phone it in and cash the cheques.
There is sure to be a financial penalty should he ask for a release, and if a company dicked me around like that I would sit around and take their money until my contract expired as opposed to having to give some of my old paychecks back.
If he is not willing to do what he has been paid to do, he should not be paid. The fact that you would also cash cheques that you don't deserve is irrelevant. Comedy Central is not at fault, at all. There is no evil corporation dicking him around. He is contractually obliged to produce a certain number of episodes. If he does not produce said episodes, he will not be paid. The contract is in place more for the artist than the network. Contracts are broken all the time, by both parties.
It is possible, however unlikely, that there would be legal consequences if Trey opted out of South Park at this point. If a law-suit took place, either way, Trey Parker would still be worth hundreds of millions of dollars. Maybe over a billion. He is not "locked in" to a situation that he cannot escape. There is always a way out.
There are always staff-writers available to take over your toughest responsibilities for a small cut, but that is how shows continue to operate as shadows of their former glory several years past their time. It is an even worse way to sell out, to offer something that looks like your product, and promote it, even though you aren't going to have anything to do with it besides reading a copy of every script and rubber stamping it through for the next 10 years.
There have been over two dozen South Park writers over the years. South Park is not Trey Parker. He does have creative control, however, and can approve or disapprove any scripts that he is given weeks or months before they air. The assumption that anything written by anybody other than Trey is going to be unworthy of South Park doesn't make any sense to me.
The show already is a shadow of its former self.
I don't know why you're insisting that Trey is the good guy. He isn't. He's not in a tough situation. There is no reason to empathize. There are no imaginary Comedy Central conspirators who are threatening legal action.
At the end of the series, I won't even remember the bad episodes, I'll remember how fucking good it used to be, and how much I grew up with it. There will never be a truly genius comedy like South Park or The Simpsons that manages to remain funny and original forever. I'm honestly overjoyed that South Park remained funny for as long as it did. I have never in my adult life imagined that South Park would remain funny forever. This decline is inevitable in all shows, so when the next show as revolutionary as South Park comes along, be prepared for this day, or worse yet, another Never-Ending-Simpsons situation.
Bullshit. It isn't fucking inevitable, man. Jesus.
There have been a lot of shows that ended on the right note. Hell, there have been a lot of shows that only ran for one or two seasons. People always insist that this is a British trait. Fawlty Towers, Blackadder, etcetera. But there are countless US examples too. Eastbound & Down is currently wrapping up it's final season. If they wanted to, they could produce twelve seasons and people would keep tuning in. Danny McBride said that he doesn't want to see the show turn to shit. John Cleese could have produced thirty seasons of Fawlty Towers. But he didn't. Because he didn't want to see the show turn to shit. Trey Parker clearly does not share this integrity, which is ironic considering how much he criticizes the integrity and quality of other television shows.
At the end of the series, I will not regard South Park to be a great show. Because it isn't any more. Neither is The Simpsons. They have written themselves out of the charts. Fawlty Towers is perfect. There is no decline. The same can be said for dozens of programs over the years. Unfortunately, South Park has taken a big shit on itself. You might be able to hose it off and forget about it, but I will always remember the excrement.