Because not all of the apps that will be given to you have the genuine intention of just helping you out. Some might be a trap, and with that you need to be careful with what you download.
That's how the others are getting scammed and hacked when they're downloading apps that have been given to them and they don't know that the app they have downloaded are fake and are made to phish.
That's true. But I think OP should do more research though. Try to learn more about platform earn gesture, check out ongoing bounties or easy tasks to earn something like that. But first research is necessary
Not just with airdrops, tasks and whatnot.
Just as you have linked that, I've seen the link of it and they're everywhere, the name of that link that you've plugged which is obvious.