How will you be able to increase the quantity of your stack when your plan is to invest an amount you can afford to lose? It doesn't sound right that you're buying an asset like Bitcoin with the mindset that you might loose your investment in the process and giving you the idea that it's best you invest so small such that if you loose in the process it wouldn't affect you. That mentality is only going to hinder you from attempting to invest above 5% to 10% of your income and that in itself means you're just gambling and don't understand what's the prospect of Bitcoin. Investing into Bitcoin isn't gambling that's a 50/50 thing and that's why Bitcoin entosiast like micro strategy still buys the amount of Bitcoin they are currently buying. Do you think they are buying at such pace and with such amount because they want to loose as high high $13.6B worth of Bitcoin? Once you're talking about investing with the fear of a possible market collapse then it goes to show you can't invest inti bitcoin for the long run and that any correction you see with look like a threat that will tend to give you the impression of pulling out your asset.
When Investing in any asset it is right that we have a possible set of senerio that can occur and prepare likewise, now in this case everyone is hoping that his bitcoin investment would do well and bring profits which is a possibility than can occur and there is also a possibility for the opposite to happen and you end up losing your investment, and it's also good to take that into account so you don't end up put all your funds into bitcoin, your right that someone might decide to invests only 10% of his income to bitcoin because of this but that is what he thinks its okay to invest despite knowing that bitcoin could also do well and give him profits and another person woudl do the exact opposite and decide to invest more aggressively even knowing this and that is what he can also afford to lose cause he has a higher risk tolerance than the other.
Everyone must have to decide how much he feels comfortable with to invest and this could be a whimy investment or a aggressive investment, yeah you understand that you may think that I you want more out of bitcoin you should also invest more but not everyone would fell comfortable having so much in bitcoin and might think as a safety measure to diversify or have more cash around, IMO it all depends on the risk tolerance of the individual.