Flatmate wants me to pay fines if he violates anything without a tv licence

sorry if this is messy, i'm still a bit angry and stressed about this, though i may be stressing about nothing.

tldr; flatmate wanted a tv licence only to watch MOTD, I refused because of the expenses and found a loophole on a website. flatmate says on the off-chance he does get in trouble and gets a fine, I have to pay for it. does he have any power to do this? could he put me down for the fine instead if some people did contact the property? what actions would I need to take? I feel like I have no obligations.

Recently moved in with a course mate for 2nd year, and he wanted a tv licence so he could watch motd, nothing else. I don't watch live tv and have not for years, so when he wanted to split the fee to buy the licence, I refused. It just doesn't make sense that I would pay for something I will never use, and being only two people, the amount I need to pay is significant.

I eventually found a website that stated a loophole, where as long as the device isn't plugged in to the mains of the house, you are still technically under your parent's tv licence. I showed him and he said fine, we don't pay for one then.

A few days later, he says to me that if he did violate any rules by not getting a tv licence, like watching live tv in the flat, I would have to pay the fine for him since I'm the one who found the loophole and didn't want to pay for a tv licence.

I'm just wondering a few things:

Is this loophole legal? https://www.savethestudent.org/news/tv-licensing-loophole-revealed-students-dont-need-a-licence-to-watch-iplayer-after-all.html [ It isnt a loophole its part of the rules. You can watch it on your laptop or phone if its not plugged in].
https://www.tvlicensing.co.uk/check-if-you-need-one/for-your-home/students-aud1


Does my flatmate have any standing or point? [ You being liable? Not your TV and you dont watch it. You provided information, the choice to follow it is theirs, not yours. Tell them to do one. ]

Could my flatmate throw me under the bus and put my name down instead of his for the fine? [ Just never let anyone in. In any event the TV I assume is his? Nope he couldnt throw you under a bus. all you did was show him a rule which is correct]

Woah is this actually true?

I can watch BBC IPlayer on my latptop, at uni, without a TV license as long as I don't plug it into the wall when watching it and my parents have a TV License of their own at our family home? I know that's literally what the article says but I just want to make sure I'm not misunderstanding lol XD

Yes. Thats what it says.

Oh wow thank you so much, this is honestly amazing news