Kids getting out of school is a special case. Most things I do don't involve mass arrivals or departures. When my car drops me off at the mall and then parks, then picks me up at the door, I don't think I'll run into that problem.
At the mall, probably not. But going to or leaving work? Or a theatre? Or restaurants [1]? Or a party? Or your beer-league bowling/darts/softball games? [2]
Pretty much anything with a predictable schedule would be quickly swamped and delays will compound quickly.
Which isn't to say it's a non-feature. It's just to say, again, that it's being oversold.
[1] Fixed schedules alone won't be in trouble. Anything with a 'busy period' will manifest this.
[2] To say nothing of professional sporting events, concerts, tourist traps and things like theme parks -- precisely the places where parking is such a bummer in the first place.
