To each their own. For me, a good lore and dialog is what makes a good RPG stand out.
If I want action and reflexes, I’d go play an action game. If I want strategy, I’d go for a puzzle game, or a 4X, deckbuilder, etc. But in a proper RPG what I look for is good lore, engaging story and some level of freedom that makes me feel I’m having an impact in that world. If AI can help with immersion and/or dynamic changes, I’m all for it. Of course, for that to happen they need to make sure it does stay in character and does not hallucinate something incoherent.
If there’s an AI chatbox that actually can stay coherent and be set up as a game without feeling like you have to input too many instructions to the AI to push the narrative (I think AI Dungeon gets close) then well, you could almost consider that being an RPG already. After all, the first RPGs were all text based. So I would already consider that the first iteration of AI-based RPG game. But translating that to a live 3D environment would be the next step.