I get why people choose to use tools like this, but I'm personally against SponsorBlock. Sponsors usually pay the content creator a LOT better than YouTube does, and the deals they offer to content creators can go up or down depending on the retention rate during the sponsored segments of previous videos.
That said, I still manually skip sponsored segments in anything I watch, usually. I'm not gonna pretend to be all high and mighty and act like I sit through every ad and that you should, too. But I'd rather do it manually, so that I can at the very least think about how bad I should feel for ruining their metrics. And also so that if they're a short one that I don't mind sitting through, or if I've stepped away from my screen while the video's playing, that they still get their playback metrics for the ad.