I believe you can see in my quote I even wrote "I feel" ;)
Also working for a "large" US company and discussing with peers from others, no such banning exists. There is very clear training and a heavy restriction on who can perform interviews, but this is not the same as outright banning it.
Making definitive statements about liability is not trivial. I can confirm that at some very large companies legal has banned this style of interview citing discrimination concerns. I'm not a lawyer, so I can't comment on whether they're call is more or less correct but it certainly doesn't seem settled.