There’s an inherent tradeoff between pseudonymous reputation and privacy, though usually not a very severe one if you minimize what private information you share.

Reputation is important for healthy online communities. If I post something that seems suspicious based on its content, people can look at my account’s history to see if it looks like a real person with varied interests and opinions. I think mine does; someone who looks at it will probably conclude that I am a single person posting in good faith of my own accord rather than a bot, an account run by an organization, or an influencer for hire.

If you don’t want to have that kind of history, that’s fine, but it does diminish your credibility if you’re posting on topics where influence operations are known to be taking place, or where there’s an obvious incentive for someone to do so.