They don’t have a choice to enforce a safer style because if they let them go full board every single night, they wouldn’t have a roster at the end of the year because everybody would be seriously injured. The guys and girls especially those at the top level of the roster are on the road wrestling 300 plus days a year travelling all around the world. That takes a told on your body just ask anybody that did the schedule.
NXT is on the road maybe a 100 to 120 a year at best, so the rest of the time they at the performance center training so they have the luxury of being able to go all out when they perform because they don’t have the same grueling schedule as the guys on the main roster has.
Also, the WWE is a product geared toward a more casual fans base that don’t care as much about workrate like we do. Just give them a simple story and they will be happy.