The main reason for this is because the HB Direct is a Single Wing concept in disguise.
The Single Wing Offense is an amazing offense, and its concepts are still used today, abliet they are are a little harder to spot.
If you combine the HB Direct with QB Choice and Speed Option along with some heavier sub packages, you have the makings of an unstoppable offense.
I just started a dynasty with Rice in which my offense is the Single Wing and I’m having a blast with it.
Don’t be afraid to use HB Direct. The concept is deadly because it is designed to be, just ask Pop Warner.