Thanks. Has Google explained why the limit is so low? This doesn't seem like it would be super useful to an attacker, or meaningful for performance to change to, say, 150k. They've already raised it.
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hope, as I understand it, is to set a ceiling to encourage developers to keep more up-to-date lists by pruning old and outdated rules.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.
I don’t think we need the adtech company to make a statement for us to know what’s going on here.