There is no need for much argument actually because after all the difference between kings and ordinary coins is different so when there is already a king, why be in ordinary coins to be used as an investment, especially for the long term.
That has become a thing that ultimately cannot be denied even though in the end there are still many who are in altcoins and there are still some altcoins that are still quite feasible to be used as investments by them but in the end it will not be enough to make or be a weakener for bitcoin because all altcoins will be sourced to bitcoin as a benchmark.

I will not say that altcoins are bad but in the end when talking about investing it is clear that there are priorities that must be considered as choices and when there is already something very good to be invested in why prefer in altcoins that are full of risks.