Deadfire is miles better, game hooks you from the start and won't let go.
But is it because of the writing? Thing that hooks me is the setting and the exploration. There's just so much stuff to do and discover, and a lot of it is genuinely delightful -- the locations, the items, the fights, the sheer variety of everything, plus the way the world feels like it exists on its own terms and not just as a theme park for your benefit (more than in most cRPGs anyway). I can't think of many games since BG2 that have given the feeling that there are secrets to discover behind every door and under every rock. So I'm really digging the worldbuilding and the way it's hooked up to a whole bunch of game systems -- the faction reputations, the impact that has on party relations, and so on.
Conversely, I'm not really
that interested in what's up with Eothas, nor have I developed any particularly strong fee-fees (pro or con) for any of the companions. (But then TBH that's the case for BG2 as well -- apart from a few really well-delivered monologues for Irenicus, the writing isn't anything to write home about either.)