They are still around, in modernized versions with brushless motors. See for example https://www.hobbydirekt.de/Alte-Kategorien/sonstiges/VOITH-S....
It's not necessarily an attribute of all brushless motors.
They are still around, in modernized versions with brushless motors. See for example https://www.hobbydirekt.de/Alte-Kategorien/sonstiges/VOITH-S....