When it comes to bitcoin investment, we should not invest all of our money in it so that we will always be able to solve our financial needs when they arise.
This discussion has been treated more than ones here, so I believe every investors or a beginner should be able to understand the concept that keeps their investment healthy and running however I believe this is one of the reasons why at @JayJuanGee introduce the method and the reason why an investor should have an emergency funds and also a reserve funds was actually because of a situation like this so that with a proper utilization of it an investors could hardly run into a problem no matter how it may be, however just like you said is not an investment wise to put in everything you have on investment because with the lack emergency funds or reserve funds their is a big chance of getting into trouble on the process.
Since emergency funds are necessary for bitcoin investment, it is not wrong if I talk about it even though it has been discussed before because this thread is like a classroom where we learn how to invest in bitcoin and hold it for the long term. New members keep joining this thread to gain a clear understanding of how they can start a perfect bitcoin investment without getting burned. If we stop discussing emergency funds, I think those new members who have joined this thread will not know what to put in place before they can start investing in Bitcoin. Guiding a newbie who wants to invest in bitcoin to have emergency funds before he or she can start is important.