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.
You seems to get him wrongly, he never said that we can't Invest into bitcoin if we don't have income source. Rather, he was referring to those guys who think that having a stable source of income is a must before a guy will think of getting started. Perhaps, even if maybe he said that a guy who does not have no income source as you said should not Invest into bitcoin, I would say that he's right because having no income source means that a guy does not have any means of getting money accept the one they give as charity it could be from our relatives or our love ones as the case may be, so you don't expect this set of people to be investing into bitcoin when they're supposed to use the money to get thier basic needs, but this isn't what he meant.