No warning, not even a “Don’t do it again email” - I had a work account, that was logged in on my works laptop, I made a comment critical of Netanyahu, and the Gaza genocide, which got that account banned from /pics. This was months ago, then I made a comment on pics, on my main account. That’s it, gone, banned.
I even have another spare account, from 2008, logged in to that, that’s banned too. FFS!
No luck on appeals, so I guess no more reddit, ever again. Anyone managed to get around this?

At a network level, your MAC address is only visible to other machines on your local network. Once your traffic passes through your router, the MAC address is irrelevant and unavailable to the hosts you communicate with.
It’s possible your browser/client software is viewing it and leaking that secret to the remote site in-protocol, but fundamentally at a network level there’s no reason to be worried about MAC address privacy.