I don't believe if there are still many people participating in airdrop, because in my opinion airdrop is no longer hype and of course it doesn't give me income,~
Not sure how many people who still join airdrops nowadays, there is no specific research about it. However, if there are airdrops from popular projects/platforms, I assume people are still interested to join. Most people only avoid joining random airdrops since it is no longer worth it. People already learned much from many failed airdrops of new crypto projects.
~but if you want to participate in airdrop, then I suggest you to making a new wallet, because it will be safer for your main wallet~
Sure, always use new wallets for airdrops or bounties.
It is not difficult to create new wallets, we can create new wallets on many platforms. But when you consider to create new wallets, you are better to create private wallets, not CEX wallets.