Willfully naive, to my mind, is a generous reading. Because it comes across strongly that you have enough privilege in other areas that the aggressions that hit, re: disability & class are manageable for you without having to say something. Of course, that may not be true at all. It may be a matter of you not having enough spoons and trying to judge possible continued pain via conversation, with current levels of exhaustion and possible future exhaustion.

Do you see how complicated it gets when one tries to judge why people don't speak out and what prods them when they do? All supposition and hierarchies of pain?

Also, and this part I stress, just because you or others don't see conversations calling out other fic and representations, doesn't mean those conversations aren't happening. Just because you close your eyes, doesn't mean the sky goes away. If it's raining and you go inside your house, the rain does not go away. If a tree falls in the forest and you're not there to see it, gravity still works and it still makes a sound.

As for discussions on isms, I think the only reason they're fraught is that fandom, in general, is not used to people pointing out the fail. It's coasted for a good long while on being 'feminist' and 'transgressive' and gotten comfortable.

Now conversations are spilling out and becoming louder and people are recognizing they're not the lone disabled person, lone transgendered person, lone non-white individual and there's a community within the community.

But also, the source CANONs have become incredibly ismist, with fandom pulling in those issues and then wanting to deny they were incorporating pre-existing problems along with their own warped concepts of personhood.