Yeah, everyone is shocked to see their swing on video. It’s a good thing though especially when working on something or taking a lesson.
For years my pro would work on my posture and I’d end up blowing it off rather than working through the "“shit shot " phase. Then I saw my swing "“down the line" and said to myself, " hmmm so NOW I know what Kyle meant about my bad posture". The pro I was working with put my video side by side with a PGA pro and I got my posture to be correct like his.
First thing I noticed was it was uncomfortable like when Kyle had me do it... and I blew it off because it was uncomfortable. BUT now that I SAW how being uncomfortable was the correct posture, I would practice and say to myself, " if it’s uncomfortable then it’s right". Eventually it was not uncomfortable and I have good posture.