Bruce Synder tweeted a fair question about using the West frontage road. I ran the routes using Google Maps. It looks like the difference is about 1.1 miles and 23 minutes. Also going this route adds 4 crossings of Freeway enterance or exit routes. It is much faster than the rote the Chamber suggests, but still quite out of the way. This would continue to not provide access to places like the school.
East Frontage Road: 0.9 miles 16 minutes
West Frontage Road: 2.0 miles 39 minutes