I like it but I don't know if I'm missing out.
Ah, the essence of audiophilia nervosa.
So ChatGPT falls for the typical audiophile BS about DAC's.
Keep in mind that ChapGPT just reads its training content and then organizes and spits it back, more or less. In effect it attempts to predict what the answer should be based on its training content. So if there is snake oil BS in the training material, there will be BS in the AI response.
That said I don't think R2R DACs are snake oil.
My $02 on the OP's question: get a reasonably large REL sub...they add lots of great texture when dialed in correctly. No matter the direction the OP goes from there, that sub will be a handy component. I'd start with that before diving right into the upgrade rabbit hole.