Reddit is going public this year to make a ton of money for the owners, which is encouraging them to take actions to increase revenue, which is annoying the content creators that make the site profitable in the first place. As such they are all shutting off their subs, so nobody can access them.

Which is a prime example why you should not put all your eggs in one basket.

Who knows where reddit will go in the future now they are going public and want people to buy into their company, and reddit is responsible for replacing so many forums.