You are absolutely correct, stable source of income is not a criteria someone ought to meet before they can invest in Bitcoin but it is good to have a stable source of income because if you are focused and determined to hold for long time, stable source of income will help you get there ( desire target) without much pressure because you will be able to allocate funds to different needs and wants and at same time grow your discretionary and emergency funds because these two are the ultimate for a healthy and smooth investment but regardless someone without this stable source of income can still do all these if they are very conscious about their investment and how to use their funds.
Well the both of you are misunderstanding what having a stable income can do for you when your investing. And you're also neglecting the fact that you cant keep up with your investment for a long term when you dont have a stable source of income. The reason why a stable source of income is important is not because of the investment alone, its because of the necessary things you must do before thinking about investment. I believe you know them. Without a stable source of income, you can't have an emergency fund, savings, and funds to care for your basic needs, talk more of to have discretionary income. It might make you want to tamper your investment.
There is no doubt about the fact that having a stable source of income is really crucial for investing in bitcoin. however , we shouldn't wait to stabilize our income before we can start investing in bitcoin. i know for sure that a stable source of income is really essential for holding bitcoin for a long term but we can start buying bitcoin so long as we have the discretionary income and at the same time while trying to stabilize our monthly cash flow. so i think we shouldn't allow the idea of not having a steady source of income to stop us from investing in bitcoin when the discretionary income is there since it is possible to stabilize our source of income while still accumulating bitcoin.