Regarding criticism of Hartsfield for not providing free WiFi:
Most of the airports that currently offer free WiFi are small or mid-size airports...the busiest airports without fees are McCarran and Sky Harbor. LAX, O'Hare, JFK, Logan, etc....not free.

Eventually I predict that WiFi will be free and available in most public places, but it was only in the past 2 years that any airport provided it...and it seems that the free WiFi connections provided in some airports are often very shakey and unreliable.
From reading your earlier post, one might gather that Hartsfield is the last airport on Earth not offering free WiFi...

Criticism of anything is fine as long as it is constructive and positive.
The fees will go away in the near future, just like cell phone per-minute fees, internet connection per-minute fees, etc. There are hot spots all over the place already, and some cities offer it free in their Downtown/CBD.