In this context, "laziness" means they don't believe the benefit is worth the cost. And I agree with that.
I'd rather they focus resources on investing in the story and the cutscene stuff that was getting a bit too offtopic. Haha.
PS: What is it about the day/night cycle you actually like? You haven't even said why you think it matters except that "everyone else does it".
Immersion, stealth mechanics, quest design (especially interesting for vampires), etc....
Instead, Larian decided to implement speak to the dead and animals which only serves to Divinitize BG3 and takes a lot of resources for a minority of players that will actually use it.
