

As they note in the article, this is a temporary measure, I.E. guaranteed to break soon.
Start switching to Firefox now so you’re done when they finally turn it of. Ignore any other Chromium based browsers, it’s unlikely they have the manpower to extend MV2 beyond what Google supports with their LTS releases.
Blame Apple for that, as for the longest time they only allowed using the Safari engine on iOS. Apparently that’s still the case outside the EU now, meaning Mozilla would need to maintain two versions on iOS.
On any other operating system, Firefox is by far the best at blocking ads with uBlock Origin.