Altcoins's position is getting stronger after the presence of a stable coin, before the presence of a stable coin, Bitcoin becomes the first place to divert assets because it is considered safer than Altcoins, of course, many Altcoins have a strong reputation such as BNB, Matic or Cardano which continues to be developed which is very valuable in the future.
It's no doubt that there are altcoins that have a good status in the market and they're also reliable and trusted by many investors. And that fact is backed by their market cap, although some projects that are not that good has also a hefty market cap.
And do not forget that whenever the altcoins market is pumping, it's all due to the pump that bitcoin is doing. That's why before anything else for a pump, bitcoin is the first to make it.