You are correct in most cases. I saw a chart which indicated the correlation of top altcoins to BTC in terms of price action. However there are always a set amount of tokens which pump shortly after a dump as many traders are moving funds to those tokens. It is obvious that there are massive volumes on stable coins. For example, whenever BTC dumps I sell my bags on Vertex.market for USDT. If the markets don't correct, I just sell my USDT for fiat for PayPal most of the time.

BTC is the white horse leading the crypto market and it is obvious that when the king suffers, so does his kingsmen. We are in a new age of finance and it is important that we take note of these correlations for our own good. "