And if that doesn't work we'll find something else. Even if we'd have to download the same video multiple times to compare and strip out the differences.
Google may have plenty of nerds, but the world will always have more.
The issue is that Sponsorblock uses timestamps of videos to skip segments. If the ads injected all have different durations, then SponsorBlock is now obsolete.
It's not even that simple. If you skip ahead during an ad, the YT servers could just keep streaming you the ad content anyway. Their servers can ensure that the next 30s of packet data you receive is an ad no matter what, so the only way you can skip it is to wait it out and close your ears and eyes. Basically the same concept as ads on broadcast TV. Which means we'll have to do a TiVo for YT... Gross.