I had 6" of roots strait down when I put them in I've done it both ways no real difference at the time I put them in I was debating digging them back up & going dwc
For clones I can see your point.
From seed, I feel it is restrictive for side growth. If I started in cubes with seed, I used to do what you do, but I found out that when you cut the wrap off, there are a LOT of roots running into the wrap, so I cut the wrap, dig a nice hole, and bury the whole cube. If you want to go for DWC in Hydroton, you can always wash the roots off, as I found that will work also. But your plants look good, and whatever works for you, that's cool.
Anyway's, nice work.
Peace out