OK , to confirm ... i've been told wayyy too many answers about this.

If i'm going 5mph through a parking lot , go to N from D , Rev Up , wait for RPM's to go back down , then go back to D , this is harmful to the transmission ? I have mustangs and srt chargers reving up like this all the time next to me ... I just wanna be clear that everyone knows what i'm talking about ...