I work for another large streaming site where people like to use adblockers. These adblockers also cause similar performance issues that are entirely caused by awful code in these blockers. I've studied the code for all of these blockers and they do stuff like:

- Constantly hammering the playlist endpoint to try and get something without an ad stitched in

- Constantly tearing down and remaking the player

- During an ad, requesting the playlist for every other quality to see if those do not have any stitched ads

- Proxying all traffic to servers the adblocker people own in countries where ads are not typically served (eg Russia)

- Intercepting playlist requests and simply deleting segments that they believe are ads (oh no why is my stream broken!!! stupid streaming website!!)

Youtube _could_ be doing something here, but there is also a very real chance your adblocker code is simply bad.

None of what you're mentioning applies to uBlock interacting with YouTube, I suspect you're talking about Twitch, which bakes the ad breaks into the stream so you still get the stream interrupted even you manage to block the ads, making people resort to hacky things like using the homepage player when an ad would be played.