If you're just worried about getting screencapped by reactionaries, then... Well, they screencap eggs still figuring themselves out, they screencap trans people who have been out for years, and they often just make shit up entirely using fake accounts, so I don't see why you should worry about that. Being able to talk to detransitioners and people who questioned their genders and decided they were cis was in fact vital in my own questioning, and I'm sure I'm not alone in this.

If it's something else you're worried about... then the fact that you're worrying signals that you aren't going to be that transphobic. You presumably understand that trans and detrans people share many experiences and issues. Even if you may be wrong about some things, it's still better to speak once and be corrected than to speak never and hold onto bad ideas. Whatever transphobia you might harbor is going to be nothing compared to the average egg.