This story is about Mozilla removing the Lite/Manifest v3 version from Firefox's extensions, this has nothing to with Chromium.
Now why does such a version even exist when the "normal" uBlock Origin is available on Firefox, I don't know. But there's no question it was a mistake by Mozilla. Mistakes do happen, I'm just explaining why it's only related to Mozilla's actions here.
Now why does such a version even exist when the "normal" uBlock Origin is available on Firefox, I don't know. But there's no question it was a mistake by Mozilla. Mistakes do happen, I'm just explaining why it's only related to Mozilla's actions here.