Yes, I agree with you on what you just said above regarding source of income and why it is important for Bitcoin investing, as an avenue to sustain the investor while allowing his/her investment mature in a long term. But one thing I also don't agree is the part where you said accumulate Bitcoin consistently, because it's literally not a must that every investor must accumulate consistently, but it rather a choice for people who have more money to always accumulate more whenever they wishes.
if you do not deposit consistently, it will take a long time to build your portfolio. And you will fall behind your target level.
Before starting investing, you need a stable income. So that you can buy regularly or consistently. You can buy consistently by adopting the DCA method every week or month. If you have the money to buy regularly or have the ability to buy consistently but you are not consistent or consistent, then you are not a good investor. You can buy even with $ 5 using the DCA method.