Remembering to look for and ignore folks with that telltale indicator has made the fediverse so much more enjoyable.
Just the most convenient link as an overview. As far as I can tell the page itself is fairly neutral (other than the criticism section).
Though, happy to hear your perspective of how Stalin's and Mao's versions of Marxism–Leninism was democratic.
From many people's perspective, it definitely was not. And there is no socialism without democratic control by the workers (all of them), in my view anyway.