They supported it for a time, but there were likely not enough A-quality pitches for the Chaos Scar which slowed releases. Then WotC had its "refocusing" and made the decision to really focus on "story" which didn't mesh well with a sandbox campaign where the PCs just investigated caves. That pretty much killed it.
Then, the editor of the magazines was laid off, pretty much putting the final nail in that coffin.
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