Currency mining and recent developments

I've heard opinions that the changes are primarily aimed at overfilling the economy with currency, but it's not so much about the amount of currency that drops, but rather about the inflated rarity value. With a rarity value of 250, it doesn't have a significant impact on valuable areas, but try increasing this value to 500 or higher, and you'll see a different result.
The way this farm works is by having multiple players with inflated rarity values and a cleaner who cleans the map for all four players.
So the developers are shooting in the wrong direction, and they're killing the already scarce solo farming.

Only 1 player with inflated rarity is enough. He has gloves on that makes all mobs killed in his presence counted as killed by him. Than you can have another buffer/debuffer in party and someone or more people with good clear abilities. But im not sure if rarity works on currency. In poe 1 rarity made no changes to currency because currency didnt had rarity scales. What made change was quantity and by playing in party you increase quantity. Now in poe theres greater/perfect orbs so rarity might have impact for that if they are programed to be same item but higher tier.