I'm flattered you see my phrasing/articulation as a goal. I often think it is still sub-optimal at best.
In regard to your question of improving technique: when I practised this piece, it was a nice study in how to play syncopations on the organ. A syncope should have a bit of an accent, so I play the preceding note a little shorter. In the first entry of the theme there are three in a row; in the video you see me frantically counting to get them right. In the rest of the piece I don't maintain 100% this way of playing them. Like I said, suboptimal... 😀