Eh, people just don't like getting "lied to". If you tell them something is going to be in the game and then its not, they feel like you lied so they get angry. If you tell people that people that you're going to release on a certain day, then move it back, then you "lied" about when the game was coming out. The more lies there are, the more people are annoyed. The bigger the lies are, the more people are annoyed. Its one of the reasons 76 was such a mess, if it didn't break so many promises it wouldn't be nearly as hated.
So when they come out and say "We pinky swear for real on our grandma that this game is going to come out on this date!" and then move it back again people feel like they made a bigger lie than the previous delays, which where already little lies that everyone can give them passes on since we had that whole pandemic thing.