Nope, this is real thruster and is (somewhat) commonly used. Their claim is usage on smaller spacecraft. You may be thinking of the VASIMR thruster which while

Nope, this is real thruster and is (somewhat) commonly used. Their claim is usage on smaller spacecraft. You may be thinking of the VASIMR thruster which while it is undergoing testing of initial versions is often thrown around as the cure-all for any potential space mission. "How are we going to get humans to Mars with current thruster technology?" "Oh it'll be a lot easier when the VASIMR drive is completed" https://en.wikipedia.org/wiki/Variable_Specific_Impulse_Magnetoplasma_Rocket https://en.wikipedia.org/wiki/Variable_Specific_Impulse_Magn...