Lol yeah with a max number of rules being 50
https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/Web...
But declarativeNetRequest is the alternative to the webRequest API which Chrome is removing. Using declarativeNetRequest means you have to rely on static rules instead of the dynamic logic that the webRequest API allowed. This is extremely trivial to bypass. So much so that it's basically nothing at all. Especially when you take into account the max ruleset sizes
Also in Chrome (and Chrome only) any images or iframes blocked are simply collapsed