I agree with all of the points of your post, including this one, except you could have worded this part better, since you are suggesting that holding more bitcoin is going to guarantee increased wealth, which truly is not true. There is no guarantee, including that if someone does all the right things in bitcoin including investing into it as aggressively as he can, without over doing it, and he still might end up in a worse situation than if he had not invested into bitcoin... so surely it is better NOT to consider your bitcoin investment as if it were guaranteed, including communicating to others in a way that suggests that either you believe it is guaranteed or that it is guaranteed - since also you could lose your credibility when you communicate like that... even though many of us likely recognize and appreciate that it is better to invest into bitcoin rather than not investing into bitcoin, especially if we have figured out that we have discretionary income. The devil is also in the details in regards to either how much or how to go about such investing into bitcoin.
Yes, I want to give one additional point that might be considered by those who have not invested in Bitcoin.
Talking about additional income, of course this money will not be used for other purposes, meaning that if we don't get additional income, our expenses will automatically remain the same, which is of course better to use additional income to invest in Bitcoin. If they save money, of course no profit will come to them unless they save it in the bank and of course there are taxes and only a very small percentage of interest per year. At this point, of course, the big conclusion is to take advantage of additional income to invest in bitcoin, which we consider this money to be ready to lose.
Or as you said investing in bitcoin does not promise wealth but it is better to do it because we see the development of bitcoin increasingly advanced due to mass adoption.
On the other hand, a fixed monthly income is of course included in the initial planning to set aside our ability to invest, such as 10% or 5%, for us to invest in bitcoin. If everything can be managed as well as possible, of course the investment we make in Bitcoin will not interfere at all with our expenses or our daily needs.
From here the interesting conclusion is, of course, don't be afraid of losing the money we invest in bitcoin and this investment does not promise wealth, but there are times when we will enjoy profits from investing in bitcoin. Profit is the profit from the capital that we have spent, where if the target is to accumulate Bitcoin within a period of 10 years, after that we will calculate how much profit we get. Looking at the history of people who have invested in Bitcoin, they have become millionaires now, so your doubts are your fault. Get Bitcoin by buying regularly every week, no need to worry about the price going down because a downturn is the opportunity you have been waiting for to buy aggressively.