I mean I understand it, but there is an almost unlimited supply of positions available, and no real reason to be stressed by an interview. The worst thing that can happen is you fail it and try the next one.
I stated my point badly, obviously anxiety is not rational, but on a rational level the stakes of a job interview are quite low (you can take another). It's not like stage fright where if you mess up your performance you could lose your job - you'll likely never see these people again. In that respect it's a bit closer to social anxiety.
Yes, we know it doesn't make sense to be stressed about it, and yet we still are stressed. Saying that we shouldn't be is not constructive IMO.