Yea yer quite right - Each producer is trying to "out do" the other. Pushing things further and further until the whole point of the sound is lost. It basically becomes a war of sounds.
I suppose a genre changes and never stays still (unless it's paying a lot of people's bills

) so you're bound to get many branches from the same tree
I guess you could compare it to how Blues began to cross into Rock 'n' Roll, how that began to cross into a Psychedelic realm, how Metal, Punk, Indie came about from, essentially, the same
"tree". And I think these days we... well, perhaps not the music magazines that like to come up with a term for every partition of a genre, the general music-loving public aren't doing it as much as they used to.
You could just call the many different sides and styles of Dubstep as "Bass-Heavy Music". There's always going to be people who want to pigeon-hole things and they'll come up with terms such as "Brostep", "Drumstep" etc. etc.
But in the end it's the sound of a country going through a certain period of society

Then other countries will pick up on a sound and add their own flavours to it. Then you get music magazines frantically trying to coin new terms... And I'm not sure why really... Maybe purely just to describe a sound so when someone hears
"It has elements of X, Y & Z" then they have an idea of what to expect.
But listening to music where you have no idea of what to expect usually turns out to be the most interesting music in the end
Limiting one's self to a single genre, again - coined by the music press - is practically taking away that person's senses one by one.
As long as there's passion in the music that the artist makes, something that touches you deep in your mind and heart, then it's bound to be interesting. In this case there's no
"good" or
"bad" music, it's purely music you understand or not, music you can relate to or not etc.
Ofcourse there's definitely bad music out there

I mean we all know what to think of the mass-produced pop shite that's strictly bizniz, that's far removed from the ethos of music... It's just a cashcow.
..... Right, that was a rant and a bit and a half and a quarter :D
**Shuts up and thinks about going to sleep** 