enabled by the lack of hysteresis inherent in all inductor and capacitor based crossovers.
I get why driving speakers directly can sound better, but this explanation isn't it.
IME working with 'full range' drivers over the last 20 years they simply aren't. You need both a tweeter and a sub to really make them work.
Whizzer cones seem to often suffer breakups. These are easy to see if you use pink noise and spectral analysis (which is available as an app for a smartphone).