> That just comes off as entitled. Youtube is providing free bandwidth, hosting, and advertising for his patreon.

Youtube has been promoting that you can do that since 2008 - https://techcrunch.com/2008/03/12/youtube-the-platform/ - so maybe "entitled" isn't the word. It's expected because the capability has been promoted.

However, in the same article you'll note this little tidbit:

In general if a video is uploaded to YouTube, in some cases we serve ads into that on YouTube.com. When people embed those we reserve rights to serve ads in the future.