I wasn't able to get this featured added to my car so I maybe mistaken with this but... I was under the impression that one would have parking assist turned off via the button next to the shifter and when it was actually needed they would hit the button to perform parallel parking. If this is the case I would assume that with the feature turned off that you wouldn't have the invasive display?
There's a few ways to go about this.
1. Keep it switched off from the infotainment unit. BUT, it automatically activates when Reverse is selected on the gear shift and theres nothing that can be done about it.
2. Added to part 1, if you decide to keep it switched off from the main menu, you can however turn it
on manually using the button near the gear shift when travelling in the
forwards direction under certain speeds (15-20kph in my case)
3. It is automatically activated 24/7 (option in the unit says "activate sensors automatically") - when say slowing down it would randomly pop up and beep if you approach the car in front of you at a traffic light (i turned it off the first day I bought the car as it drove me mad). Also due to the fact that I have the "auto park" feature my car comes with sensors on the sides, it would activate a lot more even when there was nothing near the car....
But....what's awesome is that due to sensors on the sides we get 360 degree sensor view and that helps squeezing into tight basement car park entrances or tight parking spots.