if it's present in many different airdrops and platforms. that means their team is very active and they are submitting and adding it to every aidrop platform. which a good thing. even that doesn't proof the project a good project. but still if the team is active and working means they are serious and that's what I liked about them the most.
Bitcoin Air has not come from Bitcoin or Bitcoin Cash fork.
However, the team started with great innovative ideas, from which the project might be well developed.