Name a 100W 1x12" modeling combo amp with factory Bluetooth from a respectable brand that sells for what the Katana does. I'll wait...
Ha ha! :lmao:
Most guitar "amps" currently available with built-in Bluetooth are lunchbox/tabletop units like the Katana Air or Yamaha THR30II and, even then, those aren't exactly cheap.
At least with the external BT-Dual dongle on the Gen 3, you can replace it if it ever fails.