Why is patch day still 8 hours?

Yeah no doubt, though this is a big one to get right with the reset of Season 1 warlords and the opening of the first endgame raid.
Well, I can assure you that complex system development and delivery is hard :)

I feel nothing but grace for those that have to do so much with a mostly (not referring to anyone here) unappreciative and negative audience.

However, it is frustrating!