The game is good despite DND 5e's rules, not because of them.
Unfortunately, DND is mega popular. Many people have never played anything else. Many people have never even played it. So any discussion about it has a "of course 15 strength is +2, isn't that just how RPGs work?" segment where you have to establish that DND is in fact weird.
Hard agree the ruleset is the mayor shackle to the game. I think the DnD part also includes the whole lore of the forgotten realms which is the incredible foundation in which the game could bloom tho. I'm not saying larian can't create fantastic worlds and I'm looking forward to the next games, but the lore aspect of the DnD license is mayorly beneficial to the game