[2021] This week’s challenges give only 3800 coins. What’s up with that?

The first week gave us the customary 4000 coins (or would have if not for bugs). Why are we getting less this week? Did I miss something? Is this going to be a pattern?

Did we even need this new challenge system? It’s convenient that we can still do previous weeks’ challenges if we miss them, but if they’re going to give us less coins, I’d prefer the old one.