Certainly i agree with you , doing something decent that lets you earn money in a legal way is not a waste of time. We know that when you participate in a bounty campaign and do their task is a bit hard for new comers but when they are in capable of doing those task , joining in bounty campaign just to earn money is a easier and to think you are doing those task in a legal way. Those who think that they were wasting time in bounty campaign are people who is impatient and wants to earn money in an easy way.