I can't reply to your deeper comment but there is a youtube specific extension that blocks ads to sponsor placements by skipping them.

https://chromewebstore.google.com/detail/sponsorblock-for-yo...

Has 2 million users which isn't a ton but just mentioning that it is used and it works well.

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slaymaker1907 5 days ago | parent | next [-]

There is also kind of a built in sponsorblock for YouTube on mobile. If you double tap to skip 5s repeatedly, a button quickly pops up to skip ahead (not explicitly about sponsor segments, but I'm sure this is what it is used for 99% of the time).

	▲	mvdtnz 5 days ago \| parent [-]
		FYI this is a premium-only feature. It's one that I am very thankful for. I pay a pretty penny for youtube and I don't appreciate "creators" end-running around that to peddle their shitty AG1 supplements or woodworking tools I can't buy in my country.

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hirako2000 5 days ago | parent | prev [-]

And this ships as a plugin to some unofficial YouTube player. The actual number is far higher.