If you are so, how do I put it, umm "uncomfortable" at using your own email address then why not just make one specifically for bitcointalk and then use that, just as acroman08 suggested.? In that way even if there were a data leaks in the future, you email wouldn't have any personal information, since it was only associated with this forum.
And to be honest, if you staked your btc address, email wouldn't be an issue. AFAIK, it is only used to communicate with the support in cases of account recovery. And if you lost it somehow, you can just create another account, namely "Skjadoon_recovery" then sign a message, send message from recovery account to the team. If everything checks out to be ok, you'll get back original account.
Signed address Wallets and seed phrase could be lost or misplaced after a long period of time but email account on a secured device stays almost forever. I think one should always prioritize having original email intact before proceeding to signing a message, this way you can always fall back to the available ones when the time comes.
I've kept my personal email account for over 2 decades, not sure I can keep hold of a single Bitcoin wallet for that long.