Some weird stuff happing to BTC dominance

There was a sudden drop on BTC dominance yesterday, it recovered so fast, and that looks like a BTC trap to me.
The Alts that are pumping are the specific one that have a stable channel, like ADA, DOT, ETH etc.
What grinds my gears though is that way too fast liquidation of ALTS in the market. The pump and dump ones have to die to leave space for the good projects.