It's not even that new. A professor was using a much earlier version of this same tech to steer his boat in the 90's. It was very easy to read left and right signals to control a rudder as a prototype.

There have been commercialized versions of this tech already. The Myo was Kickstarted in 2015 and then acquired by CTRL-Labs. I have one and that generation of the tech was still tricky to use effectively.

https://www.kickstarter.com/projects/312488939/myowaretm-har...

Here's a pretty decent paper on the quite long history of Brain-Machine Interfaces: https://www.physiology.org/doi/full/10.1152/physrev.00027.20...