I had a VPN that mocks location on my phone, when sports betting apps were legalized in La, None of them would let me do anything, even if it wasn't runnin, until i unistalled the app. I tried disabling the app, but it still knew i had it on my phone. I had to uninstall that app before i could make any bets or transactions. So, i don't think it woud be very hard for YT to impliment something like that.
Yeah, and what I'm thinking is the NFL will make sure YTTV is adhering to the rules they outlined in their agreement. Even if YTTV decided not to enforce rules against spoofing, the NFL would make sure they do.
I'm sure people will find workarounds, but by and large it won't be legal and those workarounds probably won't last long.