agree it sucks and not that great. WTF are guitar players buying these crappy overpriced Kemper amp modelers? Tube amps still rule.
To my understanding it’s not exactly a modeler since it doesn’t digitally model the components and signal flow of analog amps. It makes a profile of an existing amp/cab setup (in a room!) with the amp’s current settings, which means a profile captures one specific sound. Therefore it will only sound as good as you set up your real amp for capturing.
Did you try making profiles of your own amps?
Tube amps are lovely, except for the massive weight and maintenance costs.