After a person had spent so many years accumulating bitcoin, there could be some once in a while periods that they choose to take some money out without getting tempted to devolve into a habit in which they are ongoingly taking money out of their bitcoin.
Whenever folks take money out of their bitcoin prior to reaching overaccumulation status, they run the risk of delaying their progress in making overaccumulation status, and surely some folks end up drawing out so much from their bitcoin that they never end up being able to reach over accumulation status (when they otherwise were on track to do so). We cannot make judgement for others, and surely guys have way more options in regards to how they manage their bitcoin holdings after they had been accumulating bitcoin for two or more cycles rather than when they are still in their early stages of bitcoin accumulation.
You are right taking some money out from their accumulated Bitcoin with out getting to their over accumulation status could equally be seen as gambling because they are slowly selling when they are supposed to still be accumulating Bitcoin since they are still at there accumulation phase. This method is never good for an investor who is at their early stage they might sell off one day and become a no coiner, an investor right time to take some money from their investment should be when they have reached their over accumulation status which is also holding their Bitcoin above 4 years.
If you can manage your life without selling Bitcoin, then there is no need to sell Bitcoin. But if someone's situation goes to a point where it becomes a matter of life and death, then selling some of their Bitcoin may not be bad. At such a point, you can get an idea of how to sustainably withdraw. No matter how powerful an asset Bitcoin is, it is not more important than our lives.
Again, buying for more than four years does not mean that someone has reached the point of excess savings. Someone may have been buying regularly for four years, but he may still be in a very small position compared to his own long-term goals.
These days I like to think that guys have to put greater than 35% of their income into bitcoin for more than 4 years to really get to a place that he might have enough bitcoin in 4-ish years.
Guys who are putting between 15% and 30% into bitcoin each year, they still may well end up taking close to 2 cycles before they might start to feel that they had put in enough.
Guys who are putting between 10% and 15% may well take 10-15 years before they start to feel that they have enough or more than enough in bitcoin.
So the results depend both upon how much you are able to put in and how much you really think that you need, and you might have to wait some time, even if you had already put in a lot - like 1-2 years of your income/expenses, before you start to feel like you can start to sell some of your bitcoin.