After the rise and fall of Telegram projects we’ve seen how quick people can switch from hyping projects to attacking them ( i agree these projects deserved the attacks ). Farming new projects was seen as total waste of time but surprisingly farmers are hyping up testnet projects/airdrops now claiming they are the next big thing.
If you can receive coins, tokens by doing testnet tasks, it's good and actuall profitable.
Why I say so?
Because with testnet, you can claim testnet coins, tokens and use them for testnet tasks without any cost. You don't have to buy testnet coins or tokens, they are free.
Oppositely if it is main net coin or token, you will have to buy it for paying on chain transaction fees, it will cost you some thing and if at the end you won't be eligible for airdrop distribution, it's unprofitable.