Just a note that many creators integrate the advertisement of their sponsors into their content presentation and not all of that can be stopped by ad blockers (most, in fact, can't). Those creators also tend to have a Patreon or similar so their content can be supported directly. And I'd wager that's a much better model for the creators than relying on ads they don't even select themselves and that possibly clash with their content. This also makes it much more clear to users that the creators directly benefit from those integrated ads, so those kinds of ads are probably much better tolerated.
Which btw doesn't work. Users have to first watch the video, identify "sponsor blocks" and then update the blocker's database. So between the Sponsorblock users who have to watch the video and the multitudes who don't even know it exists... Sponsorblock won't block many sponsors.
Yes it's crowd-sourced, so of course it's not perfect. Saying it doesn't work isn't true though, and as more people get onboard, improves. I don't think it's the final solution, but it helps right now.