If you really want to make money from airdrops then you can't really consider which one is legit and which one isn't. First of all find airdrops that do not charge you any money, these days there are ones that ask for money and the moment you see that get away as far away as you can. Aside from that, if it's free then you should be doing whatever you can do to make money from it and try to do it. It doesn't matter if you apply to one or a hundred, as long as you can make some money from it then try it.
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But also need to know, it is necessary to consider how safe the airdrop is because now many airdrops are traps that can harm connected devices or wallets.
I also have no problem working on all the airdrops, but at least it's safe and doesn't cause any problems later.
Now there is no need to bother to analyze each airdrop or new project, because there is a special airdrop channel that is indeed specifically to discuss airdrops and I know a lot about the airdrops from these channels.
I have my own community on my local channel, and it's trusted with hundreds of thousands of members and admins who continue to actively provide the latest airdrops.
Now what is being hyped is the Telegram Mini App and many airdrops from the TON network, many of which have also been successful and listed on Tier 1 Exchanges.