It will surely show more bloody market when BTC will rise up more since a lot of investor will sell their altcoin which is really the way to accumulate more bitcoin. And this might happen more when halving is near.
And i can see that only few altcoin can follow up when bitcoin pumps up and that's why we need to be always ready for what will happen in the future.
you are wrong. the market is not so healthy yet that only a few altcoins will start growing when we will see a bull market for bitcoin. during the next pump of bitcoin price, more than 50 percent of altcoins will also grow very strongly in price and only in a few years there will be only dozens of altcoins that will be truly valuable