Maybe what you see as an emergency is different from what other investors see as an emergency, that could be the reason you said not all unexpected expenses are actual emergencies. After you have settled all your weekly or monthly expenses and used your discretionary income to accumulate bitcoin, any other expenses that come after you have done all these are emergencies because you didn't plan for them.
Mate it's not about what @Ever-young think is an emergency and what other investors think is an emergency. So what you're trying to tell us is that, if you've settled all your weekly expenses, or should I say, if you think you've settled everything, and then used your discretionary income to accumulate Bitcoin and maybe settled a few debts, and then all of a sudden a day after, you remember you forget that your hadn't gotten your mother the Television set you promised her that week, would you also consider that to be an emergency or a job for the emergency fund? If yes, then what do you think the reserve and float funds are for?
Or maybe another scenario, you got all your expenses settled and then all of a sudden, you run out of cooking gas at home, yes this is an emergency because you didn't plan for it, but it's a very minor emergency that your reserve funds can easily take care of and thus no point touching your emergency fund, that's the point @Ever-young is trying to make. it's crucial for every investor to understand the role of every backup fund, and not misuse them, that is using an emergency fund where you're meant to use a float or reserve fund, as this could potentially have its own consequences.