do you agree that the growing number of altcoins will eventually make bitcoin price go down since even small amounts of users money go to them?
the answer is so much simpler than you may think!
in the past 9 years there has been nearly the same number of altcoins. at times their number grows but eventually they die and meat their inevitable doom. that is why we currently have somewhere around 1500 altcoins instead of having 500,000 of them. and during past 9 years bitcoin price was not affected by them in the long run!