I also experienced it a few years ago, but it wasn't Bitcoin, but altcoins, XRP, when everything really dropped and chose XRP. and when XRP was skyrocketing a few months ago, he decided not to profit, because he felt it was too old and he was also not so concerned about crypto business. yes, everyone has their own tactics and also some personal considerations that may be different. in this case, yes it is very natural and even very often happens.
but for me too, Bitcoin is still number one, then altcoins, yes, top altcoins I mean.