
It’s worse than average person. I don’t even see tech-savy friends use adblockers nowadays. No idea why, I never asked.
And I feel like majority of people don’t even know browser extensions exist, and those who do think it’s all shady and malware, so they avoid those like plague.






AFAIK Firefox forks aren’t too different from Firefox feature-wise. It’s hard to make substantive changes to Firefox, so most forks like Librewolf or Waterfox slightly change default settings and extensions, but not sidebars and other cosmetics.
So unfortunately, there is probably no Firefox browser that would have Vivaldi’s features.
Maybe you could try uBlock Origin Lite? It’s Manifest v3 compliant, and I don’t remember having any issues with YouTube shorts using it. I use it on “optimal” filtering mode