You joined 14 days ago. There's no real risk to your account. If you posted something and people attacked you for it, you could just create a new account with another name.

If you want to make this your forever Lemmy account, then make a new account and post the thing.

Yeah, some people might judge you for it (especially if it's like, a really bad thing), but if you want to put it out there, that's a thing you can do.

If you're SUPER paranoid, use a free VPN (like, say, Proton is pretty good, it's freemium, free but you can pay, and the ones who do pay subsidise the ones who don't), make a dummy email, sign up with that, all through the VPN, accessing from another country, make the post, and say what you want. Or go through TOR. ("The Onion Router".) There are ways to say things anonymously online.