Yeah, opsec is a thing here. It's technically illegal to be a communist in the usa, along with a number of other places. Communists aren't allowed to enter the us, either. And a lot of people here are part of oppressed minorities. In general it's a good idea to do what you can to keep your actual identity obfuscated. Some people create new accounts on a regular basis to make it harder to sift through their posts for personal identifying information.