This is the best summary I could come up with:

YouTube can instantly switch up its ad delivery system, but once Manifest V3 becomes mandatory, that won’t be true for extension developers.

If ad blocking is a cat-and-mouse game of updates and counter-updates, then Google will force the mouse to slow down.

The current platform, Manifest V2, has been around for over ten years and works just fine, but it’s also quite powerful and allows extensions to have full filtering control over the traffic your web browser sees.

Engadget’s Anthony Ha interviewed some developers in the filtering extension community, and they described a constant cat-and-mouse game with YouTube.

Firefox’s Manifest V3 implementation doesn’t come with the filtering limitations, and parent company Mozilla promises that users can “rest assured that in spite of these changes to Chrome’s new extensions architecture, Firefox’s implementation of Manifest V3 ensures users can access the most effective privacy tools available like uBlock Origin and other content-blocking and privacy-preserving extensions.”

Google claims that Manifest V3 will improve browser “privacy, security, and performance,” but every comment we can find from groups that aren’t giant ad companies disputes this description.

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