I suggest you read the article. Officially restricting an account is one thing, but shadow banning without a court order is another. Something suspicious is happening, and the article talks about it.
Somebody may have been trying to help (and I'm sure escalated internally before daring to shadow-ban rather than ban outright for "ban-evasion"), and is getting sabotaged by people who want to score dumb points against Musk, who I'm sure doesn't care either way.