Because it's not really about MV3 but about the largest ad and tracking network on the planet changing the most popular web browser to cripple ad blocking under the disguise of security.
What's happening is step 1 - Firefox buying into MV3, even if with its own tweaks, and mentioning that DNR is a thing that will happen eventually. Step 2 - once people get used to it and drama dies down - the implementation will likely become very close to Chrome, under the guise of not fragmenting the dev experience and similar nonsense excuses.
These moves keep happening in tech all the time. Slippery slope fallacy doesn't work here - if you see something that looks like slippery slope in a tech business, it almost definitely is one.
But they never mention removing WebRequest, only having DNR in addition where it makes sense for performance reasons (and for compatibility with chrome), not having it would be stupid. I’m all for slippery slope arguments, if they are well-founded, not if it sounds like wild conspiracy theories.
I'm puzzled why you think supporting DNR is a bad thing. I get the argument that it feels like it moves closer to abandoning blocking web requests, and that's probably more a question of trust than anything.
But there are valid technical reasons to support DNR. It really does make more sense from a performance point of view, if it happens to support what you need. If not, then it's good to have blocking web requests available. And there's good reason to be unhappy if Firefox drops them. I don't see any strong incentives for doing so, though.
> I'm puzzled why you think supporting DNR is a bad thing.
You actually got it in your first paragraph - for me, it's a trust issue. I don't trust Mozilla to retain web request blocking, particularly when DNR becomes established in Firefox and most extensions migrate: because then, the argument for removal web request blocking will be, "look, there's very few legitimate extensions using this, and it's a Huge Security Hole, and everyone standardized on DNR already".
> Last fall [i.e. 2019], we announced our intention to support add-ons in Mozilla’s reinvented Firefox for Android browser (...) In the next few weeks, uBlock Origin will be the first add-on to become available in the new Firefox for Android.
Sounds to me like uBlock is literally top priority for Mozilla, so I don't see why they would do that.
> Is your claim that firefox and chrome are joining forces as part of a conspiracy to prop up advertisers?
No, because there is no conspiracy needed. Chrome is a product of an adtech company, and Firefox is funded by the very same one. Mozilla is at best fighting a losing battle here, forced to make concessions to survive. Or, it could be argued that Firefox exists only to serve as an antitrust shield for Google.
If Mozilla: Do you think that Mozilla would think of their users' privacy if it meant alienating Google and loosing their money? I'm not picking a side here - I have no idea so I'm just asking.
