> What exactly is your gripe with MV3?

Running an adblocker is the defining feature of the extensions API. ublock origin has 5x as many users as the second-most-popular extension [1]

Supporting ublock isn't just a nice-to-have add-on feature for an extension API, it's literally the only thing most users care about.

[1] https://addons.mozilla.org/en-GB/firefox/search/?promoted=re...

But MV3 supports uBlock Origin Lite.

Which, in my experience, blocks ads just as well, but also lets pages load significantly faster.

MV3 supports uBlock.

It supports limited ublock functionality, not all of it, which will gradually be exploited by ad corps like google unless you think those are saints

Reading comprehension is the defining feature of a good commenter.