At the moment it seems that only a few airdrops are worth following,
so most likely we will just waste time and better not have high expectations of airdrops,
I personally would prefer to join the signature campaign and it's more profitable too
Not all of them can also be profitable even though it is around signature campaigns, because it still depends on the success of the project that created the campaign (including signatures) because this year and last year there were also signature campaigns that did not pay after the duration of the campaign was over.
all are depending in the company you are working either it is airdrop or it is bounty program because even how more you participated but if the company is scam so what can you do?
just be vigilant and be comparative because in the end? it is still our job that must be paid in what we are participating .
Just make sure that you must be ready for the outcome , it is the community that will help you for something profitable here.