Not really. I'm often the only one that has a problem with a product feature or process, and my speaking up just results in more work (remaking my case multiple

Not really. I'm often the only one that has a problem with a product feature or process, and my speaking up just results in more work (remaking my case multiple times) and no additional work for anyone else. It's better to clam up and let them discover the problems themselves. Not that I am always right. Maybe they're not real problems? In that case being silent is still a clear win.