I doubt that you are making any meaningful and/or important point OrbitalX - since the ways that guys use either term would depend upon the context inht which he is using such term... so at first there were guys who were seeming to proclaim that guys should not be investing into bitcoin unless they have a steady income (which they might have had referred to as a source of income or source income.. either way).
Something else to ponder here, I don’t necessarily agree with you can’t invest in bitcoin if you have no income source. When you consider your emergency funds include your dca amount as per the term; 3,6,9,12,18 etc months of funding/living. Technically you don’t have an income but you planned for the worst and can continue to DCA too with the emergency funds include kicking in, in your time of need.
Friend, I don't understand how someone can invest in bitcoin if the person has no income. Because logically the person is definitely not in a safe zone, because it will definitely be a bit difficult to meet their living needs. Then you said using emergency funds to invest in bitcoin, I think that would be even more dangerous. Because when someone has no income and then uses the existing emergency funds to invest in bitcoin, it is the same as harming yourself. Because the point is that the person's life is uncertain because they have no income, plus their emergency funds are used for investment, just think about what will happen if the person experiences an emergency? So you need to know that investing in bitcoin is good, but if the method is wrong or the capital is not right, of course the results will also be less good. So the point is you have to think realistically and not just think short-term. Because investing in bitcoin is long-term, so don't forget to take everything into account while we are in the bitcoin hodl phase.