> Hiring is hard enough. You want to know something you can't possibly know, so you have to use very imperfect, approximate signals. I don't know why you'd want to kneecap yourself on purpose like this. You might as well just roll dice and hire when 7 comes up.

You have to use the signals you have.

And if the signal someone has sent for certain professional roles is "I don't understand appropriate formats to send documents in" then that is the signal you got.

Depends on the job of course.