It's actually not a problem if you end up having to sell your Bitcoin because of an emergency. I've done it before, and I have no regrets, although if I had held on I would have made a bigger profit.
You can be right on your statement from your position. If you feel there is no problem in selling your investment for an urgent moment then it may not be regrettable for you but you cannot give such advice to a beginner or another. Why would you advise someone to break the investment? I think your investment plan was flawed and you are a failure as an investment manager. If you manage the investment in a proper plan and keep an emergency fund ready to protect the investment, you would not have to sell the investment at the time of emergency and regret not having a profit.
if you have a reserve fund that can be used to back up emergencies. But sometimes when we have that kind of fund and see Bitcoin going down, we can't resist the urge to add some to our wallet. It's a human condition and is often experienced by investors.
You can ignore the emergency fund and succeed in investing for the long term if luck favors you in the investment field. But why would you leave your investment future to luck when you can manage it by your own skill? It is normal that urgent moments will come in a person's life. But we must be prepared to face this urgent moment, if you neglect to prepare it can be the biggest misstep of your life. You might regret it when you look at a successful investor.