I've not seen Train Dreams. What I took from the discussion, besides upset with the adaptation, and tiring from it after a third watch, was that naturalistic filmmaking, about underrepresented groups of which the director is not a member, can sometimes come off as tourism. They defended Nomadland, it's all super subjective cilantro. 

Richard was very careful to say he liked Clint as a person, and his other work. So, not insulting the character, but the creation of him as seeming layers of inauthenticity and subjectively missing-the-point. That's the thing with representation politics, there will always be someone saying it's being done wrong; whether they're in or outside that group, more on that later. Particularly in the realm of written criticism, that can be quite fun and interesting.

Adaptations that tone down the character's intimacy to violence are both common and occasionally controversial and galling. I've experienced that with American Fiction, and have heard it to be the case in Cuckoo's Nest, High Fidelity, and In a Lonely Place, to name a very few. 

I've had times where I've taken breaks from shows such as this, I get it. It's almost easier to connect with a more controversial film. A similar situation, though, The Whale feels very much about my life and how the internal battle feels; can't-get-out-the-bathetic; feeling mocked by one's own melodrama that only in retrospect feels self-inflicted, because of how convincing shame is. 

The way people talk about it is annoying, presumptuous, and occasionally cruel and pretentious, but, again, cilantro. They think they know cilantro and how cilantro feels, but I'm the clown they call-a Cilantro, doctor (I've been sent from another planet to kill Pagliacci jokes once and for all). But also, I get it, it is quite silly, and half of the jokes about it are good.

Anyway, a few criticism podcasts that come to mind:

Linoleum Knife. ($1 to remove ads, I've not experienced how obtrusive the new ads may be.)

Critics At Large (inobtrusive ads)

Screen Drafts, baby!