Please give a generous reading for what I wrote. Off-hand, I was referring to any WiFi dongles he would have likely bought. Not an 8 year old report of problems encountered at the time that's not even exploring self desense as a problem.

Yes, USB 2 or 3 can cause issues for 2.4 Ghz if you don't shield your components properly. Are you saying that WiFi dongles, whose only job is to connect to these networks, isn't shielded properly?