Management is a nightmare and will pretend like they care about you only to overload you and then ace you after you’ve bent over backward to help them. Don’t actually share your opinions or ideas. Just go along with everything or you'll eventually get replaced. You could work on a project for months only for it to be shelved or never see the light of day. Which at a big company could be considered normal but at a startup is a huge waste of everyone’s time and effort.