You can only consider airdrop been less risky when Money is not involved because there's always a risk in anything that requires puting our money. Moreover I will say it depends on the kind of airdrop because some airdrop is not worth it, nowadays is very hard to get a legit airdrop, However most airdrop is just like a waste of time because after completing the whole task you won't receive any token at this point it becomes a waste of time.
It’s not a waste of time once you get lucky lol.
But with how many airdrops are there, it is quite difficult to find a legitimate one that actually has some potential value. Many people still dedicate their time to airdrops in hopes of getting lucky. If you think this may be a waste of time then it’s fine I also don’t think airdrop is the best way to earn here in crypto. It’s not the most productive to be honest.