Is the emergency fund you mean in fiat? If so, you can use fiat to cushion the impact of the economic situation you are currently experiencing. Fiat is never resistant to inflation, keeping Fiat in the midst of uncertain economic conditions will have a negative impact on the amount of money you have because of its reduced value.
It seems that this is quite appropriate for someone who wants to overcome an emergency situation in the fund sector that he has. Because if it is about fiat, he should have no difficulty in overcoming it if he has the capital and knowledge to raise his economic condition in life. Especially if he wants to make some of the money he has as capital to get other money through doing business or a business that he has mastered.
You can develop an emergency fund in the form of Fiat to maintain your financial stability, start doing something to form the Money formula to make money. If the asset that you hold is currently in the form of Bitcoin, then defend the asset that you hold even if you are in financial trouble. Look for money from other sources to finance your life, selling Bitcoin at this point will make you regret it when the price has increased.
If he already considers Bitcoin as a very valuable asset for him, of course he will not let go of Bitcoin when facing difficult conditions. Because he can look for other options to deal with the emergency problem he is facing, especially if the emergency problem is fiat. I think it won't be that difficult as long as you try to earn some money through more logical things in life, because someone who doesn't get anything is someone who often complains in life. So he never thought of a way to fix himself from a difficult condition at any time.