Wow!! People get worked up over the smallest things these days............Its a game and you can be a cleric of a "good" deity and still be a murder hobo because your choice of a god is just fluff for this game......same goes for male drow being clerics of the spider queen......its fluff. If it bothers you then don't play one
It bothers people because it shows how little Larian cares about FR lore. Although its very possible that this is just possible because of early access. Its not as if it can't be easily implemented.
And at least in other D&D games I know clerics (paladins, monks) lost their powers when their alignment changed to something not compatible.