The heart of this issue, IMO... (Destiny)

by Robot Chickens, Tuesday, November 28, 2017, 18:45 (2631 days ago) @ Cody Miller

So the only thing a player could conceivably be doing by grinding events beyond level 20 to get exp would be trying to get cosmetic gear without paying. Throttling exp only really effects this (after level 20), so the intent is clear: we don't want you to bypass paying money to get bright engrams. If exp had some sort of other functionality, the scaling might be justified.

Ummmmm... wouldn't they just make the cool cosmetics only available via money if that were the case. There is a way to "earn" them so I'm not sure your conclusion is as concrete as you think. Maybe it's that they want to give you something to continue to chase so that people keep filling the world. I think one of them even said that was their design goal this time around- fill the world with cosmetics rather than forcing people on a power grind. At the time, I believe everyone was cool with that trade because it was all cosmetic. The catch is, if you accrue everything too quickly, there's nothing really to chase and people leave the game. People are leaving anyway, but I don't think it's over this.