Yeah, I mean obviously I could snoop into the database if I really had to, but it's a lot of effort and not something I'd do, but as said, the forum software itself just doesn't have that functionality built in. That's not to say that old archaic platforms didn't have that built in, maybe earlier versions of PHPBB did, but that died a long time ago.
I used to contribute to the development of a Perl based (the only Perl based) forum platform, and that didn't have the functionality either. That was Free Forum Software - E-Blah Bulletin Board System
The only forum platform to have never had a security breach of any kind ever, which is pretty impressive.
It's not popular any more as it's original purpose was to be database-less, as back then, hosting was reasonably cheap, but hosting that came with a database wasn't. So people wanted a forum platform which had it's own text-based database, and the Perl programming language is excellent for ultra fast text file manipulation. It was ideal and there was/is some very large communities still running it. It's dying now because all hosting comes with DB access now.