To be honest, most such things are more for advanced spytools. If you only fear companies, I do not think that this will be implemented any time soon. They have a much easier time if they deliver software like Gemini or hardware like Amazons Alexa. This way they also get a much better quality to train their AI tools. They do not want to spy you to know your secrets, they want to spy you to make money and low quality data is not much helpful.
But slowly we really need some open source devices with FOSS firmware. This way we have full control about DPI and polling frequency and both values together set to a high value is an issue. But why you would want to send position data with 8kHz if you only play between 30-300 FPS? Even if these things are above a thread model, it just feels better to know it cannot happen.
This kind of hack reminds me of gravity sensor “microphone”. But the output quality on gravity sensor is worse I guess.