All this is true but the issue you're forgetting is LATENCY.The wireless is really not a big deal either. It just means that eDrums are finally joining the IoT which is a concept that’s been around for decades.
Got a Ring doorbell or a Nest thermostat?
“The Internet of things (IoT) describes physical objects (or groups of such objects) with sensors, processing ability, software, and other technologies that connect and exchange data with other devices and systems over the Internet or other communications networks. Internet of things has been considered a misnomer because devices do not need to be connected to the public internet, they only need to be connected to a network and be individually addressable.
The main concept of a network of smart devices was discussed as early as 1982, with a modified Coca-Cola vending machine at Carnegie Mellon University becoming the first ARPANET-connected appliance.”
So 40 years later, DW patents the concept and technology for drums?
Yes, we can connect any number of devices to each other (using bluetooth most of the time) but the human brain can detect latency greater than 10 milliseconds and bluetooth (as far as I know) is yet to reduce its' signal below this threshold.