I would recommend folks check out Helium (https://helium.computer) it’s fast, basically just ungoogled chromium, and has full support for ublock origin.

> full support for ublock origin

This meant they added to Blink all the Gecko features uBlock Origin used?[1] Or they said they could maintain MV2 after Google removed it fully? Or they supported it so far?

They said We'll keep support for MV2 extensions for as long as possible. But other developers said this and meant they would support MV2 until Google removed it.

[1] https://github.com/gorhill/uBlock/wiki/uBlock-Origin-works-b...

They bundle uBlock Origin into their Chromium fork, I expect that if it became too difficult to support the APIs needed on MV2, they'd integrate the features more directly into the browser.