I dont know how other dongles work, but i can tell you my experience with the AA Wireless.
Positives : Works great, connects fine and so on.
Negatives : The car wakes up at relevant intervals, which powers on the USB port, powering up the AA, this makes the car power up bluetooth which means the phone connects to Bluetooth, even tough i am inside my kitchen.
VERY annoying to the point where i have pondered about taking the car apart, and adding a relay, that is only energized when the green LED in start button is active.
I dont know how other brands of dongles work, but with AA Wireless that's my experience.
Have tried different "mitigation" settings in their app, but never found one that makes this problem go away.
The car will for example wake up and power the USB socket, if the car starts charging, stops charging or various other situations unknown to me.
I have a feeling it does it also, if someone pings it with the app, and i have the ZS EV in Home Assistant, so it might be, that the reason i have these problems is, Home Assistant pinging the car regularly for updates.