If he earned that much money, it means he used multiaccounts, because I can't imagine any other way how you can earn that kind of money on retrodrops.
There are a whole lot of projects in the market, I'm just keen on getting legit ones, one of the reasons I'm slow and thoroughly scouting for these crypto projects. Some people, when they are informed about these airdrops, some relents in their actions and while some take it to the next level, they ensure they do everything activities to clone a spot for good odds of accumulating major rewards in the airdrops. As for me, I've learnt my lesson, no giving until I've grind and grind, making sure I achieved quite important purposes in the system.