The game is clearly tailored for a very different kind of players and characters.
It's really bizarre. I can't fathom Larian's story/level design theory at all.
You have a pretty explosive opening with some urgent, heinous shit going on and then the game slams on the brakes so bad the train derails into a gorge. Everything after the intro is pure, unmitigated filler. Oh dear, some goblins are attacking some tieflings who are also tense with druids--EXCUSE ME I HAVE A WORM EATING MY BRAIN. FUCK OFF.
This is worse than Fallout 4 "Gotta find my son--ooh shiny!" for 200 hours.
But if you try to just skip all this stuff you miss out on the levels you need to actually get anywhere. This was something the late Aweigh mentioned re: DivDiv2; Larian's level design is worse than a scaled game, because it forces you to choke down all the content whether you like it or not just to maintain the minimum level to survive.
If you want the player to grind some filler quests to get their levels up before hitting the main story, put the inciting incident AFTER that filler, not before.