I don't know why people sell their altcoins to buy BTC when the BTC price goes down. It will be good if they sell their altcoins to FIAT or Stablecoins directly.
when they buy btc they are helping its value to go up and when btc is up their altcoins can follow .
that would be the logic behind . alts are down and selling it to fiat or converting it to a stable coin is a bad move because they could lose .
they shouldnt have invested in alts before if all they want is btc and they shouldnt have waited for their alts to go down before they convert it to btc .
not everyone are in to btc but some have passion for other coins