Here's the whole line (and this is from your archived quote from January 2015, not the current page and has been in the FAQs since 6/2013 when FAQs were added, in case you want to say it is "bait and switch" again):
"How often can I Supercharge? Is it bad for my battery?
Supercharging does not alter the new vehicle warranty. Customers are free to use the network as much as they like."
https://web.archive.org/web/20130608104542/http://www.teslamotors.com/supercharger?
That was used in context of the impact on the warranty and the battery. It was not used in the context of whether you can use it to offset all your daily charging,
And when that statement was made there were far fewer Superchargers around and of those, not many were near heavily populated areas. As the network increased, more are closer to large populations and there are always a few skunks mixed in with the cats.
I'm actually surprised that there are 22 pages on this thread--although perhaps I shouldn't be. The intent and statements seem clear enough:
1. Superchargers are mostly to facilitate long distance travel with the exception of certain ones that are for apartment and condo dwellers.
2. A few folks abuse the intent because they live close (Pick up a pile of napkins with their Chipolte burrito).
3. Elon asked politely that they not abuse the system.
4. Abuse means using the SCs almost daily and preventing travelers from charging (it takes only a few abusers to effectively shut down the system for others).
5. Tesla's marketing material and information from Tesla employees is often not so clear. Any longtime Tesla owner should be aware of this.
6. Tesla typically does the right thing, although sometimes it takes them a while to do so.