Mozilla will want to be API-compatible, but there's nothing inherent to the API that requires the arbitrary content-blocking limitation that Google put in. So, Mozilla will be API-compatible without adopting this shitty limitation.
Interesting, I didn't know that, but it doesn't really change anything about my comment. Mozilla can offer APIs in addition to what Manifest v3 offers, allowing extensions that want to do these things to do them. It's already the case today, for example, that uBlock Origin makes use of additional APIs for more effective ad blocking on Firefox.
Why would they want to stop? This is their fight against adblockers and on Chromium based browsers it's an effective way so of course they keep pushing. ;)
I don't want to hear the realistic argumentation of why this is proceeding. I want to live in my fantasy headspace where comments like this can stop superpower megacorps from being assholes....okay? 😅