[2021] The "in it for the infamy" weekly challenge should have been closer to the start of the season, or it should have been retroactive.

The reason for this is that each time you earn a major rank up, the amount of infamy it takes to reach the next major rank increases.

So let's say you're halfway up the infamy ladder when this weekly challenge became available. You have to grind for much longer than someone who is at 0 infamy would, because your rank ups require more infamy. You've already put in the work to climb halfway up the infamy ladder, but you are not rewarded for it because this weekly challenge is not retroactive.

Clearly, not much thought was put into this weekly challenge.