Unit assignments

I agree with this 100% Some of these requirements are insane. Even the best players usually don't get any more than 5k points on those smaller scale matches. 10k requirements are insane for those. 30 headshot kills in a match... pretty hard that one too and so many others. They just want to sell those shortcut passes I guess.

Looks like AI made up half of them. Some even have obvious typos

Yep they are ridiculous and not just the per-match ones, but yes they are the worst.

A prime example of the brain-dead design that DICE has applied here and in many areas of this game and, yes, I think you are right, it probably is the case that many of the developers don't play the game, at least not enough to have enough of a clue.

I don’t mind some grinding, but I agree these are virtually unobtainable tasks. 

I don't even want to come near these challenges, they'll make me despise the game in a week, nothing fun involved, takes everything away from regular gameplay and the only thing i can think off that they're so hard is maybe they were based on doing them against bots. The mentality of bust your nuts off and be frustrated five hours in a row for a skin isn't really the road to go to have a successful game.