I expect that a lot of bad norms that crop up in various programming communities will get tossed out after years of dysfunction, often as a result of outsiders and younger people arriving, and stating the obvious: This doesn't make sense. It's actually nice to know this when dealing with all of the mess in the present. You can't change it now, but eventually someone will.

But yes, LLMs are likely to force permanent conformity.

One could also talk about how language in general shifts with the population, but LLMs are likely to prevent it. One would think anthropologists are already looking into this experimentally...