altcoins are - dust, bitcoin is a wardrobe, the bigger the wardrobe, the more dust there is, if you cut the wardrobe it will become smaller and there will be less dust on it too 😊😊😊😉

explain to me simply.
what solution do altcoins have to bitcoins?
why do altcoins fall immediately when bitcoin falls even though they are paired with usdt, is there some manipulation?