In their theory I just try to f*ck around to find out.
USDT.D% chart is inverted. But there is something very important in dominance. Maybe big players use exit from btc/alts to usdt when they see this magic trend line. Because of this we see how D% growing and crypto falling.
Do NOT try to trade & invest using this fantasy. Again, I just try to find out and I need theories to do this.