Definitely his choice, except "flowy" playstyle doesn't work because you can't hit square jumps if you're drawing a circle, which is basically why everyone recommends snappingMofu kun wrote:
snapping is moving to the next note in an straight or almost straight line,
flow playstyle, is not really snapping your wrist to the next note, usually more like curving it.
so for a square pattern, a snappy player would have cursor movements more like a square, while the more flowy player would instead use a circular pattern to hit the notes.
in the end, it's really your choice on what you end up using though.
This is coming from someone who's played like that for a long time, but when you learn to snap accurately, your aim improves a lot.