SE has already mentioned that they want players to be able to complete the story as a single player and has already made several adjustments to old dungeon mechanics so NPC can do them. Personally I'm NOT a fan of NPC been able to complete 8 man trials. I would say though that I didn't mind as much for Scions 8 man in Endwalker because it seems thematic and it was a 10 year journey.
My question is, how would everyone feel if 7.0 was DESIGNED from the start to be 100% done with NPC on mind? (Including 8 man)
I'm Personally not a fan of it, base on adjustments SE made to dungeons, they dumb down several mechanics so an NPC can do them. My fear is that 8 man raids would be dumb down as well so it can be complete with NPC.