Restore after 15 more days? Others recover the next day, what's the point of deducting that little bit?

Receive an airdrop once, deduct 15 points, and these 15 points can only be restored after 15 days.
This means that one account can receive an airdrop at most once or twice in 15 days. Two airdrops deduct 30 points, which will definitely be hard to catch up.