If you played on console you would totally understand the backlash.
I played and beat it on Xbox One. There was so many bugs it was astounding it was released in that form.
Cars falling from the sky, people floating around in T poses, characters faces just not loading in, missions not updating so you can’t complete it. It would crash at least twice every time I played it.
I still enjoyed the game, the bugs would range from funny to game breaking; however, it 100% deserved the backlash it got.