Earlier quoted context omitted.
Are there definite plans for uBlock Origin not to support new blocking API?
I believe so: https://github.com/uBlockOrigin/uBlock-issues/issues/338#iss... And: https://twitter.com/gorhill/status/1134127701583904770?s=20
That's a stance I like very much. And it is good news for Firefox for sure, since the roughly 30% (last I checked) of users that use privacy-enhancing extensions are being handed a very good incentive to switch.