I didn't even notice that my YouTube Premium Lite subscription had been terminated for about a month, YT decided to not offer that type of subscription anymore and I'm not willing to pay more for YT Premium, uBlock Origin is working flawlessly.

I think they’re still doing split testing.

They're not doing anything effective. What does split testing have to do with it?

You might want to see my other comment, here: https://news.ycombinator.com/item?id=38542185

“Can be bypassed” does not necessarily mean ineffective, when the goal is to change behavior.

Do people typically respond to the YouTube anti-blocking threat prompt by disabling their ad blocker entirely, or by enhancing their ad blocking?