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YouTube warns it might make your viewing experience worse if you don't turn off your ad-blocker
(www.businessinsider.com)
This is a most excellent place for technology news and articles.
If for some reason you can't use a full-on ad blocker, "SponsorBlock for Youtube" is another Firefox extension you can install. It doesn't block ads per se, but it will auto-skip segments of a video that have been reported as ad content. Kind of a grassroots thing, like reporting cops on Waze.
Until they try to kill that too.
I don't think Google gets any money from YouTube sponsorships directly. Not watching a sponsored segment and not clicking the affiliate link are one and the same in the eyes of the company.