Since quite some time ago, ESPHome prepends the friendly_name of a device to any entities corresponding to this device. This is not configurable. This means that if I create a sensor with name ${device_name} Temperature, my entity id will become friendly_name_device_name_temperature, which results in sensors like plug_washing_machine_plug_washing_machine_temperature, which I need to manually correct.
The result is that I stopped using friendly names for my devices, making my configuration less nice.
Please give us control back! Please give us the option to set an option like prepend_friendly_name: False.