Most at times poor people have limited resources and if they end up putting too much than they ought to in bitcoin without keeping their emergency funds, they could end up wreaking themselves, keeping emergency funds in other asset would not be a good decision if we are not well established at least in having enough resources or if we don't have other asset that we feel we can liquidate if an emergency comes up and how quickly we can get that cash to solve those problems when we need them. So I understand why you said that poor people should have their investment in both bitcoin and cash for now so that they can focus on growing their bitcoin investment first an it makes them rich and also having aeons to insure that they won't sell it off so soon.

A rich person can equally afford to start investing in two asset at once and it won't be a problem to him cause he is well able to in resources and it won't be a problem for him to build an emergency funds that would be able to cater for both assets, but when someone has limited resources it is most logical to live within that means an besides if you can find ways to limit your expense we can have a lot of extra cash that we could use to invest in bitcoin without having to dip from our emergency funds, so I think it's better we actually find some ways to increase our sources of income and have more resources available to use than to use our financial cushioin to invest and remove our insurance.