In fact this statement states that they ask their clients to litteraly do the job of justice. That’s quite scary.

Ensuring a card cannot be used to buy illegal content.

That means they can shut you down if they think you didn’t do enough, which is literally their whim.

How do you pay for a steam game without a credit card?

They have the power because states gave it to them. States can very easily take it back. But they won’t because they’re corrupted assholes.