Define "Aggressive" Riding

Skidding, sliding, hard cornering or hard braking.

The main reason one needs to avoid this type of riding when you first install studded tires is that the studs need time and pressure to seat properly.
If you push your tires too hard prior to properly seating your studs, they are much more likely to lose some of the studs, which defeats the purpose
of buying a studed tire. And yes, the studs are made of tungsten but skidding around on concrete or asphalt will wear them down more quickly.