I agree with the rest of the things you said, but not this. You cannot expect everyone to install an ad blocker. And ad blockers aren't always a good solution. For example, in most mobile OSes ad blockers are currently far from good, and even if you get a good one, your phone is going to download the ads anyway (even if you don't see them) spending your bandwith.
As one of those living beings on the planet, I would prefer to go to a new wiki without ads, rather than to the same one with ads. Your mileage may vary.