oof that is rough! I have always been worried about this from stock music websites. The other ones don't seem to have this problem, so that's good enough reason to not use @Pond5!
The problem here is he is technically writing original content (summary of the video in his own words) and he's embedding the real YouTube video, so there's no intellectual property theft which would otherwise be an easy case to close.
Here's one from the associates policies:
"(r) You will not attempt to intercept or redirect ... traffic from or on, or divert commission income from, any site that participates in the Associates Program"
Thanks! I've heard lots of reports of HDMI splitters not working with the ATEM HDMI output. I think your best bet is to use an active device like the MD-HX geni.us/41upBQ