I've got a friend who says high fps is bad

Basically I've got a friend who says that fps over 60 damages your eyes and causes epilepsy as well as ruining your monitor. I don't know where he got these ideas but I have to stop him. Brother is playing with a 5070 ti with a 144Hz display locked at 60Hz. When I asked him why get such a good gpu for 60 fps he said he wants to crank settings up. What do I do? His PC is lit better than mine