Of course, any newbie that wants to start his bitcoin investment needs to know that he should only buy and continue buying without selling for one circle or more. When you plan to be a long-term hodler, you will have the flexibility to be investing and learning at the same time. Whatever area of bitcoin that you feel is important for you, you learn it as you are investing in order not to put your bitcoin investment at risk.
Available time for investment position and holding your bitcoin depend on your own conditions which can be different than the other investors. No investors are the same as the other investors so what you said can be wrong with some investors. They only can afford to invest money in bitcoin for 1, 2 or 3 years and it does not make their investment practice is bad.
They only have to know that by investing in Bitcoin in 1, 2 or 3 years, they might have higher risk of getting loss than getting profit. If they can hold their bitcoins for four to five years and longer, risk of loss would be very small or almost eliminated. This means they will almost have profit by holding their bitcoin for four, five years and longer.
This map shows this
https://hodl.camp/