As a candidate I find them to be a huge overstep and will almost never provide them.
No, I’m sorry. I’m not going to pester my friends and colleagues to “hop on a quick call” or fill out a 2 page survey every time I interview somewhere.
Quite frankly, I really don’t need or want my friends to be intimately involved in my job search.
This poor guy had to have all his references book a call, only for them to all be notified shortly after that they weren’t needed any more, because he flunked the interview.