Going to have a second bite at this.
I agree with your implication that the merits of internal cabling, electronic shifting (have you ridden Di2 and eTap?), and Specialized production of rim-braked bikes.
Nearly all bikes with electronic shifting
do not use "bluetooth" or ANT+ technology as their primary operating system (some use is made for peripherals eg satellite shift buttons on the drops).
"SRAM eTap uses neither to operate, instead relying on a proprietary wireless language to ensure a closed system. However, eTap does [transmit data to other devices (eg displays) with] ANT+.
"Modern Di2 systems use E-Tube Project as their operating system. E-Tube Project comes as a PC program and as a mobile app for iOS and Android devices. The new wireless unit, which plugs discretely into your Di2 bike, contains Bluetooth Low Energy (BLE) and
ANT Private Network microchips which allow the system to communicate with other devices."
However with esoteric Campagnolo you are correct "Super Record Wireless [ergos] connect wirelessly via Bluetooth and ANT+ to the front and rear derailleurs."
"Specialized have decided to stop production of rim brake[d bikes], it is all hydraulic." thinks the OP.
It is not "all hydraulic".
Specialized still list rim braked bikes in their road listing:
https://www.specialized.com/gb/en/shop/bikes/road-bikes/c/road?
Allez and Allez Elite are "entry level" bikes and cost >£1000.
Have you info they are dropping these models,
@midliferider