Why? Mozilla isn’t a threat to open web like Google has shown that they are and they certainly can use all the support they can get.

On mobile I’m using DDG as primary browser.

Don’t get me wrong, DDG’s app is a massive step up in privacy, but it’s hardly a browser, it’s simply a WebView frontend. You’re pretty much still using Chrome.

Google’s proposed “Web Integrity API” browser-DRM was probably the biggest attack on the open web since its conception. I don’t think they have fully given up on that idea and they’ll likely sneak it in more gradually and slowly. Manifest v3 is just a small baby step in this direction of taking away user control.

Also, isn’t that against EU laws?

Very likely, but the final verdict is still out on that one, as far as I know. There are several other services and sites that offer similar opt-out of tracking and ads for money schemes (albeit not as ludicrously expensive).

I believe that’s both against the spirit and any reasonable interpretation of the law, but I don’t think it has been fully tested in court.