Stereo systems and televisions only have a simple jack 3.5mm plug socket, which only have an "output" function. With smartphones, however, the 3.5mm jack socket is multifunctional and serves as an output, but can also accept and implement commands "from outside". Such a function for stereo systems and televisions makes little sense, because 1. most people will never connect headphones to these devices and 2. these devices have their own remote control with which the volume can be regulated. I don't know if there are any devices that can be operated with the cable remote control of a headphone and if there were, it would certainly be noted in the specification of the device.
Furthermore, the title of the headphones says "ANDROID" in large letters and the specification also says "mobile phone cable remote control" and "3-button Android remote control".