People can do what they like, yet I think it is problematic to be holding onto too much cash unless you know of some specific reason that you are going to need it.
if you know an emergency is coming then it is not an emergency, even though you might need to keep some cash on hand.
Also even more problematic for poor people to be holding 3-4 months of cash and have hardly any bitcoin, which is part of the reason that so frequently as a ball park suggestion I consider that building the emergency funds and the bitcoin until they both reach 3 months as a ballpark idea.. ..
and so there is a need to balance liquidity and volatility yet at the same time eaqch of us has to account for various circumstances in our lives related to our anticipated income and our anticipated expenses so that we have some decent ideas about how much discretionary funds we have on a regular basis and how much various back up funds that we need.. including accounting for how we hold them in terms of both liquidity and volatility.. and anyone holding more than 4 months in cash is likely losing value as fast as they can keep it up (especially if they do not have at least similar levels of bitcoin)... so they might not be keeping value if they are stacking cash rather than stacking bitcoin...
and yeah, each of us has to figure out those balances without overly preparing for emergencies that might not happen or to speculate that there is only one way to prepare for emergencies.. and really, sure none of us want to sell any bitcoin that is at a time that is not of our complete choosing, so we have to figure out the balances and the likelihood of various scenarios in which the expenses exceed the income for extended periods of time.
I believe that, as humans we're meant to understand that emergencies would definitely occur just that we can't predict when it might likely happen, I mean the exact time of occurrence so all we can do is to prepare towards it, that's why, asides Bitcoin investment the Emergency funds is very important, having it intact is meant to be everyone's way of life since emergencies are unforseen events that we know might happen, don't know when but should be prepared for it.
Instead of holding emergency funds in cash for about 3 to 4 months, I think it might be better to even hold it in a stable coin, I understand that one needs to be very prepared and sometimes it might even take longer before emergency situations occurs but then that doesn't mean we should allow our money lose it's value while trying to be prepared for the unforseen therefore it's still not bad if our emergency funds is held in bitcoin or a stable coin instead of holding it in cash for about 3 to 4 months.