One of the best moka pots I owned is the Bialetti Elettrika [1] which comes exactly with a detachable lead like the one you mention. But for me, coming from outside of the UK and never experienced the kettle lead situation, it has always been the opposite, the pot has a ‘computer lead’ :)
[1] https://www.bialetti.com/ee_en/moka-elettrika.html