On top of the fact that these problems are often poorly selected, poorly communicated, conducted under completely unrealistic time pressure, often as pile-ons (with 3-4 strangers as if just to add pressure and distraction), and (these days) over video conferencing (so you have to stare in the camera and pretend to make eye contact with people while supposedly thinking about your problem, on top of shitty acoustics), etc, etc.

It's just fucking ridiculous.