>>105607431 (OP)It's been known that they've been researching a way to include ads in the video stream, instead of the ad coming from it's own stream, so it's more difficult to block.
The problems with that are usually costs because they'd have to change a ton of stuff in how their services work, basically reworking their whole ad API, and even with that, there's some projects like sponsorblock who detect ad segments from Youtubers themselves, so in the end, all that work would probably not be worth it
Forcing Manifest V3 was probably the only thing they could do because at least limits extensions to a certain extent