I feel completely the opposite. I personally will avoid by any means to join a company who silences my thoughts and ideas. In a startups your ideas might not always be put into action, but from my experience they're heard and maybe discussed further. Do you know how long it takes to make a simple change to a production environment in a big corporation. It's called change control, I get it, a lot can go wrong, a lot can be lost. I choose not to be a part of it. I've been fortunate and have live through the journey of going from a startup to a publicly traded company. It was a great experience and I learned a ton. I've worked for a few big corp / business casual companies and It's not what I enjoy, it's not how I choose to spend my work day.