This did need to be done, indeed it did. Everyone playing that is under 18 (Like myself) should have parents permission. I've always told the younglings running around that if they don't want they're parent to see it, then they probably shouldn't be doing it!
Anyways, you've probably put some fear into quite a few people...
When you say IP ban you think of a single IP and the user can get it changed should they need to. If i feel the need I will ban an entire ASN Which contain from half a million to 6-7 million IPs. The users will be removed one way or another.
I can't imagine many people that will mess with something when there is no chance of repairing it. Such as smashing that small bug on your windshield with a sledge hammer. You got the bug, and it won't be coming back due to the lack of windshield and it's life.
Hmmm, hopefully we can all return to normal soon!
~Kekitan