Allowing mods to ban users from other subs makes Reddit very hostile towards new users

Depending of where you post, you can get banned from other subs.

Reddit mods desperate want to silence anyone with a different opinion, including on places they have no power. It's pathetic.

However, for new users this can be very frustrating. Imagine if you just created an account to post on a random sub, and suddenly you get dozens of private messages saying you have been banned from multiple subs.

Reddit should either put a stop to this. Or at least warn new users about this.