Let me be a little blunt.
I am pretty familiar with the origins of Brohm's offense. They watched NFL film when they were working on it. To be sure, there are some spread / AirRaid ideas in there (fwiw, there are AirRaid concepts in pro offenses and pro concepts in the AirRaid).
Modern NFL offense was in the gun
66% of the time in 2023.
And 24 of 32 NFL offenses (if I counted right) were in
11p 50% of the time or more in 2021 (the most recent I could find quickly)
The NFL / pro-style offense has changed dramatically in the last 15 years. Again, pro-style isn't just about having a FB and under center, but it's conceptual too.