Bad news for me, I use youtube a lot with an adblocker and it's essentially ad-free. It's going to be a bad day for me when they start cracking down. It doesn't surprise me, but it's a bummer.
I wouldn't be so hopeful, Twitch has pretty much remained unbeaten and the only "ad block" solution I've found still gives a 30 second interruption of the stream, it just doesn't show the ad anymore. It's why I don't use the site anymore, even with Twitch Turbo as an option these days.