Surely it is up to the court to push for the evidence, that the suspected site is guilty and the court decides whether it is proven or not - and hands out a court order or not. In which case the wording is correct, they are suspected, until proven guilty before a court of law.
To be honest, I like this better than many other schemes around the world, where the sites are assumed guilty and blocked, until they can prove their innocence.
As long as the IP holders have to put the evidence before a court of law and prove their suspicions, before a court order allowing the site to be blocked is issued, I don't really have a problem with it.
If it runs along the lines of:
Big IP: Judge, give us a court order to block bbc.co.uk.
Judge: Okay, no problem.
Then it is a complete farce.