Extensions like sponsor block don't help when entire videos are centered around promoting a product. A very popular mountain bike channel I used to follow, GMBN, for example, pretty much only makes videos in order to promote sponsors. The sponsors drive the very content we're here for, it's not just 30 second spots.
SponsorBlock can also tag entire videos of the kind you cited! It won’t block them by default, but the choice of what to do when you find out will be yours.
I do notice that the GMBN and GCN videos that are just advertorials do have "AD" in the top corner when you look at the video thumbnail. I'm assuming this is an EU or UK thing, because there are a lot of other channels that do exactly the same thing but there's no such "AD" callout.
Fair point there. That channel would just have to drop for me if the "review" videos got excessive, and find a replacement or no replacement.
I'm looking to skip the embedded ad-read sponsorships, credits, the "thanks for subscribing," and "thanks for our patreons" stuff and sponsorblock does that in spades.