As a fellow mature female gamer I completely disagree with the OP. Wyll is a little too muhc with speaking in 3rd person, Gale is a LOT of bragging and Astarion is a mix between dubious and flirty. Shadowheart and Lae'zel both have a huge chip on tehir shoulders.
They are completely flawed - and I love that. We are only in the first act of the game and have truly seen very little. I think their character journeys are going to be very interesting.
They don't differ that much from the ones in DOS2 - or Dragon Age 2 - where the characters were complete messes in their own way.