You can, but they're nothing like GPT and the other massive models. Consumers simply don't have the hardware required to operate those, you need datacentres for it.
From a social engineering standpoint, LLM's are much like social media.. they are a gateway to intellectual laziness and decline in cognitive ability. The evidence is already there for that, unequivocally. If you want your population to be intellectually handicapped for political purposes it's a no-brainer. The general mass of people never really read beyond a headline, so with GPT if they ask a question are they going to bother verifying anything? Nope.
There's also the inherent biases too, because these systems are only as transparent as the human architects make them. You only need to look to Google's search algorithm to see how this is going to pan out. It's no different to television back in the day.. it is currently the most powerful mind shaping technology on the planet, political powers are evidently going to exploit it.
I'm fortunate that the stuff that really interests me, like psychology and philosophy, are two domains AI can't ever touch. Even its regurgitations will never be worth a damn in comparison to just reading the source material of men who thought.