They are morally poor and run down.

The fact that Firefox isn’t listed as a browser alternative but Brave is throws any credibility that this article might have straight into the garbage.

The best solution on iOS is Yattee. You can add Piped or Invidious instances as locations and stream ad-free YouTube from there. Another solution that doesn’t involve Piped and Invidious is AdGuard. Open a YouTube link in Safari, hit actions, then hit Block YouTube Ads (by AdGuard).

They said iOS. There’s no extension support in iOS Firefox.