This is completely false, conspiracy theory level nonsense. The site simply doesn't accept the commonly-used free email addresses that would facilitate easy duplication for trolling/spam. There's no real name tracing, no "background checks" (lol), or anything of the like.
The rules are pretty clear, and any warnings/bans are publicly attached with clear reasoning. Been a member since its creation and never been warned or banned. Pretty easy if you aren't engaging in bigotry, trolling, or other forms of bad faith / disingenuous arguments.
I won't pretend it's flawless, because no forum is, but it's a considerably more comfortable place to be than 4chan / most subreddits if you don't want to be around bigotry.