[amf12]

Do you have a source for any of these?

[woolion]

For the first point: https://news.ycombinator.com/item?id=38345858

For browser fingerprinting, there doesn't seem to be many sources. There is this post:

https://community.brave.com/t/new-version-youtube-fingerprin...

Yet this is very easy to reproduce, and there is no other way to explain the personalized video suggestions in private mode.