For a regular shot with iron...
When you think about it from a physics standpoint. You hit a ball with the club...you are transferring momentum into the ball. Too much energy is being expended in ball spinning.
smash factor for a mid-iron club should be about 1.35- 1.4, on a good hit in the sweetspot.
Small amount of roll is expected I think, especially in mid-irons and long-irons. But for you obviously, you go with whatever distance your clubhead speed affords you to hit the irons.
Short irons and wedges do benefit sometimes from lots of backspin. You can guide the ball towards the hole, with backspin like how Phil Mickelson sometimes does it.
I think my backspin with irons and wedges was about 5000-6000 rpm. When you go to trackman, you should clean your clubheads with water so the grooves are not dirty with mud and sand. Dirty grooves lower spin.