I'd expect that somebody that can do that is doing the hiring, possibly as a founder?

Founders never put themselves through the hoop jumping they put their employees through. Most wouldn't even meet the bar at their own companies.

It's been brought up that people who do the hiring or serve on the hiring committee would not be hired themselves based on their own hiring criteria and bar.

Possibly why As hire Bs and Bs hire Cs. If the interviewers aren't good enough to be hired, they certainly aren't good enough to interview.