Even if they have a lot of expenses paid by parents, they still might need to try to anticipate their cashflows, because even if the parent's might also give them money, they may well have limits in how they are going to be able to get, and even if their parents serve as an emergency fund, there may be limitations with that, too. so it is still likely a good idea to consider the various categories, even if the source of income might not be from regular work (salary).
you're right, though their parents may have serve as an emergency funds, doesn't mean they would also be the one that would be helping them with the funds they are going to use in investing, (if one plan to invest in bitcoin). Inorder for one to keep accumulating bitcoin with any of the strategy that are suitable for them , while schooling he or she must have a side hustle that won't affect their studies that much but at same time serve as good sources for them to purchase some quantities of bitcoin. Though the money coming out from the sources may be small but it would still help in accumulating some bitcoin when their parents serve as an emergency funds, that may minimise their expenses.
Even if they have a lot of expenses
I am not sure if I agree with that way of framing the matter. I think that we can say that bitcoin is an assymetric bet to the upside, so if you do not leverage or otherwise gamble with your money, then the most that you could lose in is 100%. On the other hand, there are decent odds to be able to perform at least as well as any other investment option, including possibilities to outperform other assets. There is no guarantees which way bitcoin will perform, but it seems that with the passage of time, the strength of its investment thesis is getting stronger rather than weaker...
thanks for the clarity , am kinda of aware of something like this , that the most you could lose in bitcoin Is 100%, but the thing is that if one was able to be patient enough he or she may endup bouncing back. While for those that use leverages to hold with the mindset of wanting more profits ( most time due to greed) would endup losing huge percentage, and either they sell In loss due to cutting losses or they endup getting themselves liquidated.