uBlock's built in list has 47,000
EasyList has 75,000
EasyPrivacy has 31,000
Fanboy's List is 78,000
Basically none of the major lists fit inside this quantity.
I don’t think we need the adtech company to make a statement for us to know what’s going on here.
Checking 150K rules once wouldn't be a problem, but if you have to do that for 50 network requests on every single page load, that adds up. So the hope, as I understand it, is to set a ceiling to encourage developers to keep more up-to-date lists by pruning old and outdated rules. This prevents a situation where browser performance slowly degrades.
I'd like to see a system where users opt-in to allow ad blockers to collect metrics on which rules are actually applying, and have them occasionally trim anything under 0.01% usage. Which sounds like a small number, but should capture the majority of dead or unused rules. Of course, that would require a new browser API in a declarative system.