That’s not a problem with YouTube, that’s a problem with the content creator. YouTube Premium accounts actually pay out more per watch than free users, and YouTube also provides a Skip Ahead button that will appear at the start of most ad reads (it’s a bit hit or miss, I think it relies on data from other people scrubbing past them).
sure but if youtube wanted to, they could force the creators to tag these sections themselves so they are 100% accurate and have an option for the paying customer to skip these automatically. it is within their power
YouTube could ban ad reads that aren't tagged, then Premium accounts could get no ads. I guess they're worried that tags would leak and allow 3rd party solutions (like SponsorBlock) to skip more easily.