Exactly.
My brain just hears “buy product! We like our product to spend money on it to try to influence you! Now look at these pictures or hear these sounds of said product”
Like man in a suit walking up to me on the street and asking if I’d buy a cheeseburger from him because he likes it a lot.
Enjoy your product sir, ill be leaving now.
The dongle itself connects to the mouse. As far as the computer is concerned, your mouse is plugged in (via the dongle)
If it were connected over bluetooth, you wouldnt need the dongle. Youd just pair the mouse to the pc directly.
Odds are the dongle is just using a standard 2.4ghz connection to the mouse like wifi/Bluetooth, but that doesnt matter for your question.