That is definitely a reasonable interpretation. But I think if I'm violating their ToS, then almost every non-trivial use of the IFRAME API is violating their A

That is definitely a reasonable interpretation. But I think if I'm violating their ToS, then almost every non-trivial use of the IFRAME API is violating their API. Google is a big company, and I think it's likely that the IFRAME API team and the legal team were just not in sync on this. I am definitely not trying to imply that anyone is being a "random a-hole", I'm just hoping I can find a way to appeal to a sympathetic project manager or decision maker at YT that can see the value in this project. Thanks for your input!