Well, basically this is very important that having an emergency fund is very important for a Invest. When you invest in Bitcoin at a fixed price and then if the market falls, you can use that emergency fund for any necessary purpose. It is important to collect an emergency fund before buying Bitcoin, it will always be a good plan for yourself and it can benefit the investor in any bad time. I think such a plan would be a good step for real investors where they invest according to a percentage, save some percentage and leave some for an emergency fund. Many times this emergency fund is very useful to deal with emergencies, every person should have such an emergency fund plan that will always benefit them.
First you don’t use your emergency fund to accumulate when there’s dip in the market , that’s the reason you have reserve funds , it usually meant for such role not your emergency funds ( is for handling expected and unexpected expenses).
Tbh I don’t fully I understand your point though, in the other sense it sound like you rely on your bitcoin to handle your expenses , then when there’s dip in the market you won’t be able to withdraw, then you will have to rely on your emergency funds. If is such information you are trying to pass I will just advice to reduce such act because you will only delay the growth of your bitcoin.