Well, the EFF argument is that the deeper you go in the stack, the more you find chokepoints that, if fully used in this way to express preferencs about content

Well, the EFF argument is that the deeper you go in the stack, the more you find chokepoints that, if fully used in this way to express preferencs about content, would harm or end the general-purpose nature of the Internet, or computing, and that the cost of doing this would outweigh the benefits. You probably agree that a monopoly ISP or near-monopoly backbone provider censoring arbitrarily would be a problem, even though it's their tech. Or if not you would probably agree that the government doing it would be a problem. And then it's easy to see that it's just as much a problem when monopolies do it when you remember that the government has the power to make or unmake monopolies according to how compliant they are with the government's censorship priorities. I don't know if AI base models are natural monopolies but they might be.