I'm using a laptop on a bed in my hotel room (so can't use my normal wired setup). I noticeably feel something wrong with my balls doing this. It isn't pain, I just notice something there. Of course it is damage as literature has confirmed this with studies on sperm health.
It isn't psychosomatic, often I'm not even thinking about it till I feel the sensation, and I'm like "oh yeah wifi damages sperm". Then when I turn it off it stops.
I wired my house and set got usb-c to ethernet adapters for all devices. I'm not too worried about myself, but I don't want my son's developing body getting fucked up by an onslaught of rf transmission. I can't believe how much rf noise there must be in smart homes where every lightbulb, socket, appliance, etc is connected to an access point. Add that to people living in appartments where every neighbor is doing the same thing and you probably have a toxic stew of rf poison.