You can not count on crypto as a source of permanent and stable income. This applies to any sphere in crypto: airdrop, bounty, trade, exchanges. In either of these items, you may fail or have to wait too long for a well deserved reward. Some coins received as reward for the performance of tasks, may not soon appear on the exchange or do not appear at all.
Although it could be a helpful one in living because it gives a strategic transaction to different criteria. Yes they have said make use of time with crypto so that your future will be stable apparently that could be true to you but not true to others. It means depends but in my own opinion if you try hard and make use of the resources you have well success is near.