That is absolutely true, I don’t need a reasonable source of income to start investing in bitcoin, instead what I require to start investing is just a discretionary income, that is why as little as our discretionary income we can actually start investing instead of thinking we need a lot of big money, either way there is still nothing bad if we can invest a huge amount of money, if we have an opportunity for that we can invest through the lump sum, I know there are some fellows who have an income, but doesn’t have a discretionary income as their leftover money and they can’t accumulate or buy Bitcoin, that is why it’s important to to have a discretionary income, which is the most important thing to start investing.
Your comment seems a bit confusing to me. We should always continue to buy based on our financial situation. It would never be a good idea for us to borrow money from someone to invest. We should always continue to buy based on our discretionary income. If we want to buy aggressively then we should buy based on our financial situation.
To invest we need to have basic knowledge about Bitcoin and a source of discretionary income. If you don't know what Bitcoin is and why its price increases then how do you invest. And how do you build trust in Bitcoin. To invest you need a source of discretionary income and basic knowledge about Bitcoin.