Airdrops, especially the ton based ones now have replaced bounty hunting, since the later has been over saturated
It's still the same bounty hunting just different platform, after all technology evolved and people seek the trend.
the airdrop in ton based itself also have been quite saturated, $hmstr is one example why it's oversaturated, too much player farming the airdrop while allocation remains minimal, as a result people just get $30 out of their half year long dedication finishing the tasks.
eventually there will be new trend that replaces this and also make it outdated, its just how it is with any airdrop seeking.