People who do bounties are generally from third world countries and they are obviously not financially independent. It is logical for them to look for ways to enrich themselves as soon as possible. When seeing bounties that advertise themselves with a budget of $500k in tokens it is hard not to FOMO and participate in the activity.
Anyway I believe that as long as they spend time in this forum their subconscious is exposed to deeper discussions about the technology and current events.