It is not a reliable source of income to those who do that as their primary job but for the many who do bounty just a secondary means to gain some income, it might be ohk for them. The fact is, if you place all your hopes on bounty, that is where you begin to get worried when listing delays.
Bounty programs here should not really be treated as a major source of income. Because doing so, one might find in a very difficult situation in his day to day life. Now, that tokens are very unpredictable, like when will you receive it, when will it gonna hit in the exchange, or will they ever get a good value once listed? It is like your future is very hazy if you will rely on these programs.