That view has been accompanying me for a while as well. Difficult to really put a finger on it, because what I'm thinking of are fields where "enthusiast dilettantes" did not have their joy in honing their skills in the slightest way affected by the existence of trained professionals so much better than them. But when anyone can just throw a few ktoken at it, that joy has to be, uhm, "renegotiated".
I guess sub-fields with little tool use won't be affected a lot, tool-heavy sub-fields.. might pretty much be over. (think playing the guitar at a campfire vs going wild on a set of TB-303 + TR-909 vs going wild on emulations thereof)
The other "ai took our..."
I like that term, I have been looking for a while now and haven't yet been been able to come up with a better one.