I mean... Yes?

For most websites to be functional, they need to be moderated. If you let anarchy reign, it's not some utopia like I've seen a shocking number of people online claim that it would be. It ends up with a lot of racism, hate speech, doxxing, threatening violence, illegal content being posted, users being harassed, and other terrible things. Most people won't want to be part of a site like that because it isn't accepting or welcoming, it's a dumpster fire.

No one should have come into Lemmy.World and thought, "Huh, this is going to be true freedom! I'm going to start advertising selling cocaine!" Maybe they'd want to, but the site isn't just anything goes. They're trying to run it on the open web and draw in a stable community. To be clear, I'm understanding but unhappy about the decision to ban communities about piracy. But criticizing a website by saying, "I thought you said anyone could come in, so why do you have rules, HUH?" That's bullshit!

Noone's stopping users from using Lemmy.World here. You just can't do stuff related to piracy in the process. There's a difference between "you can't do X here" and "you aren't allowed to be here." If you're incapable of engaging with a social space without bringing piracy into it that's a you issue.

It's not Ruud who approves or disapproves of users. It's Hetzner, his hosting provider. If you have a problem with the restrictions that Hetzner and the movie and music industries are imposing, take it up with them.

Notably absent from the piece you quoted: "to do anything". See how that works, Sparky?

Everybody can use it. From the entire world. They just can't use it for things that are against the law, against the rules, or against human decency.