Comparing the two images, I suppose the problem is that the promo shots will be using the size S-M(?), the size they expect to sell more of probably.
Where the top tube almost runs straight into the seat stays giving you that nice aesthetic line…
While it might make for nicer visuals to keep that line and grow the seat tube and supporting brace tube by scaling that little sub-triangle they’d be forced to weld a longer brace on further up the top tube, where I expect the tube walls start to thin out, they’d then have to change the butting of the top tube or learn to weld onto a thinner wall without blowing through and it would add yet more weight… So structurally what NS have chosen to do makes more sense (IMO), it just ain’t quite as pretty…
This is unfortunately what you get for being tall…