I agree with you that it doesn't matter whether we have a permanent nor temporal source of income, what matters is as long as we can afford to produce a discretional income out of it to buy Bitcoin, Of course we can still be buying bitcoin from our discretional income even before securing a source of income to support our bitcoin accumulation. What I also understand is that our consistency of producing a discretional income to buy Bitcoin also depends on when our next earnings will arrive,some of us receive regular weekly payments while others will have to wait patiently until the end of the month to get paid from their places of work but what matters the most isn't how stable our source of income is but as long as we can figure out a discretional income and the level of our focus in buying/accumulating bitcoin consistently & How long we choose to Hodl patiently for the long term.
There are diverse professions in the world and diverse salary systems. Even the sources of income vary. In the field of investment, diversity of professions, diversity of income sources or diversity of salary are not important, but a common thing is a source of discreet income, which can be available to all types of people. Discretionary money does not accept diversity of professions, does not accept diversity of salary systems and does not accept diversity of income sources.
So instead of focusing on what your profession is and what kind of income source you are involved in or what kind of salary system you are, focus on whether you are able to set aside discreet money. Because investment requires discreet money, not the type of income source.
Right, people's income patterns or salary systems are different in the world, someone is doing business or job, their income patterns are different. When investing in Bitcoin, there is no need to focus on what your profession or source of income is, the main thing for investment is whether you can set aside extra money outside your expenses. To manage an investment for the long term, a emergency fund is needed for three months, because we do not know what may happen in the future, so we need to be aware in advance and invest regularly, and it is very important to be patient for the right time.