The strap location does look like it has been moved.

It is not uncommon to pleat with uneven pleat depth. Some tartans have stripes at uneven intervals, like when there are predominant stripes, two per sett, and that is the chosen stripe to pleat to. The kiltmaker has no option, other than using huge amounts of fabric, but to have uneven pleats on the inside of the kilt. In fact, I don't see the whole sett in the front apron.