No, it's not "I want it free or otherwise I'm not getting it". My beef is that they don't have the courtesy to even say something. It's rude, especially when we were told at GenCon that it'd be out in the September edition.
It just smacks of how they're going to treat their paying customers. Just like the refusal to put out an outline of the Scales of War (and then putting out a half-assed outline).
A few years ago, my company was hired to take three monthly print publications online by a publisher in the Health & Wellness industry. Lots of articles about exercise, diets, healthy living, green, sustainability, etc.
Their editorial calendar changed multiple times every month. I thought it was odd, but they said it was part and parcel to the print periodical industry. Articles promised by freelancers were late, some stories that didn't have proper fact checking were deferred to the following month, hot topics got priority and last minute shorts were written, etc...
They would publish the "In the Next Issue" section of their magazine as well, but sometimes that changed. It was rare for any MAJOR article to be late, since it was freelancer-death to be late, and most times they kept two months ahead of schedule with their calendar, but things slipped each month.
They never sent emails or posted apologies or whatever when something didn't appear in an issue, they simply moved it to another month and that was it.
It isn't rude to change the editorial schedule, nor is it rude to fail to apologize for it or explain why. It is part of the business.
The internet, with previews and instant news, makes us all raise our expectations to a reasonable level, but some of the reaction to WOTC changes in their Dragon/Dungeon publishing schedule is way over the top.
Seriously. Way over the top.
Now... I AM disappointed with WOTC's half-assed SoW outline. That thing isn't a tasty teaser or an overview of some value to a DM. It's a lame attempt to appease the loud interweb minority.