saying a challenge is not supposed to be fun is one of the dumbest things I have ever read on the internet. Things can be difficult, challenging and still fun. In fact no part of a GAME should ever not be fun and many of the challenges in the game, while challenging are zero fun. Some are not even challenging so that excuse and definition falls off as well. If I fire up a game, it's too have fun. That can be to have fun just messing around, or it can be to have fun challenging myself. However playing in the specific ways they decided for these challenges or doing the things they ask for simply isn't fun and I will be skipping these.
The challenges are not "fun" and don't really challenge too many players. Worse, their end point is some junk "raid/wolf gear" that is so far removed from a SOF mil-sim that it is ridiculous. That it is the only way to get some of the weapons that can be used in game is on par with Ubisoft hiding one pair of combat boots out in the wild for whomever wants to spend the game on that tedious search. ZZZZZZZZ! Ubisoft have proven time and again that no other developer can wreck a game better. shrug!