Airdrop never profitable at this time even i see bountydetective service using many airdrop but i don't participate yet. For a airdrop rewards 5$ to 10$ need kyc pass how the jokes? Otherwise airdrop easy work with got money but since it was impressfull 2017 year even not now. I won't agree passing kyc for 5$-10$ lol so airdrop totally time waste at now.
Instead of doing airdrop you can actually do a bounty campaign in this way you can earn not only 5$, 10$ and so on..but more if you think most of the airdrop today aren't profitable anymore.. i can help you to choose a safe campaigns go to this
Safe bounty campaigns by cryptoaddictchiehow do you know that ? what if bounty is a scam , you wont earn even 5 usd . 5 usd is high now but expected airdrops pay right now is only 1 to 2 usd , with that said amount its not worth it to do kyc but its a good way to earn some few bucks without investments needed . thanks btw for the link that you shared . that might help users here but i wont only agree on its title . calling them safe is still questionable now that we have a good number of scams happening lately
the calculation he give is only base on what the project owner say what price it will start or how much they are selling the tokens.
In reality no one really knows how much the real of each airdrop until its available already in exchange and you are able to see the real price of coins in the market.