Yep! I was there when they were exposed for that, it was even other admins who were revealed to be sockpuppets lol, and when exposed they admitted which accounts were sockpuppets, including a large number of accounts not even suspected to be such

Can't forget that they used those alts to vote in the site's "democratic" polls for admin decisions too, since the site originally had the policy of user-driven direct democracy for major admin decisions (which they quietly dropped after the sockpuppets were exposed lmao)

During my time on that site, I was harassed by a decent number of accounts for being an ML (including them successfully voting to remove me as mod from the damn ML sub for making an ML post lol) and it was surprisingly refreshing to find out that literally all of them were just that one admin's sockpuppets lmaoooo

Only thing I miss from that site was its custom CSS feature, that was implemented pretty well, and a theme I made for it was good enough that the admin kept using it for a while even after they drove me away lol