Same thing goes for the "porn bans will destroy the internet" posts:
One day it will happen and a few countries will do this, ban adblock or require ID for porn. But I am not so certain it's a bad thing for us technically savvy people. Tor, i2p and such will get a huge influx of people. Totally new cultures will form there. It will be exciting. I will not NOT block advertising and I think many will do the same. So even if that's going to be illegal, it will either not be enforced (that would be bad) or it will lead to people finding a different place in the internet that advertising hasn't reached yet :)