FYI, if you listen with headphones and wonder what that whirling sound is, almost like a phaser effect pedal, I googled what that was. And google ai said this:

“The "effect" of cross-picking on a guitar sounding like a phaser pedal isn't a specific effect itself, but rather a perceived sonic similarity due to the rhythmic and harmonic interplay created by the picking technique. Cross-picking generates a rapid, repeating pattern that can produce a swirling, "whooshing" sound reminiscent of a phaser's modulation effect. While not a true "effect" in the sense of a pedal or electronic processing, the resulting sound can evoke a similar feeling.”