Yes, all the "eSIM" over-the-air management uses the STK for example. But to be fair, the user interface part is no longer used. The part of the STK still in us

Yes, all the "eSIM" over-the-air management uses the STK for example. But to be fair, the user interface part is no longer used. The part of the STK still in use is what is required to support remote management functions between the network operator and some applet on the SIM card. The user is out of the loop, and it's perfectly fine for a modem not to support the user interaction part of the STK.