If you declare misinformation as a reason for banning something, you really just create an arms race to declare anything you don't like as misinformation in order to ban it.
Misinformation is fought in the market of free speech and ideas and critical thinking. Not by banning it. That's just might makes right.
Because Reddit is not an unbiased information repository. It amplifies some messages and suppresses others, by numerous mechanisms. Some of those are under direct admin control, some subreddit moderators, some the collective hivemind of users, and a large portion through direct manipulation and gaming by various sources.
The platform is already tilted. The question isn't "who" or "how", but what should it tilt towards: bulshit or truth?