The Alts have made tremendous gains vs Fiat. When BTC / Fiat is at its peak, don't the Alt / Fiat have to collapse? People will be selling Alts to buy BTC. Right?
Most people who bought altcoins before, are now in a loss of BTC value at the moment, just remember when ethereum was about 0.12 each one of them.
Now it is less than 0.06, maybe if all those people who bought it on June of this year now could have the double of that amount if they just kept that bitcoin instead of buying ethereum.
The sames goes to doge and to almost all the altcoins in there.
Doge was more than 300 satoshis before, and now it is just 30 sat/each, and it increased more than four times during this month.