BTC/fiat is still far away from it`s peak and there`s no connection between btc/fiat and alt/fiat.
Why not? During the recent BTC price increases most of the altcoins (like 95 of first 100 in coinmarketcap) were red. People were dumping them to buy BTC. And after had like 2-3l price increase some of the alts had like 30%+ at the first day.