For anyone using an Android phone, the ReVanced[1] patches for the YouTube app (formerly just YouTube Vanced) applies both an adblock and SponsorBlock, on top of various other convenience features. You'll need to provide your own YouTube APK file to patch.
I'll never go back to using non-Vanced YouTube ever again.
Advertisements are a blight on this world. They are the reason for marketing and sales budgets being quadruple that of engineering and UI/UX budgets, the whole 'form before function' thing, and enshittification in general.
[1]: https://revanced.app/patches?pkg=com.google.android.youtube
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