Here's the thing. That's your guess at what was meant. You have a guess, I have a guess, my dog probably doesn't have a guess because, dog. It's your guess at Pemerton's guess at what WotC is thinking. Without some kind of authority, your guess and my guess have equal value, and Pemerton's guess and my guess about WotC have equal value.
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If someone wants to actually say "I think you should do (or not) this because I think your opinion is less valuable to WotC's because reasons, AND here's why doing X, or not doing Y, will benefit or hurt you", then we actually have something to talk about, at least for a moment.
This is getting oddly meta-, but trying to descend back down to simpler levels of conversation:
I haven't said that you (or anyone else) should or shouldn't do or say anything.
My point about you being atypical was (and remains) that your standards for "supported game" or "supported setting" are, in my view, not typical. Based on your posts upthread about having all the old GH material on shelf, and having been published in Dragon and having been invited by Mona to apply for a job at WotC, I am going to guess that you have many, many shelf-inches of D&D material, probably $1000s worth.
WotC has made it clear (see eg the links to the Dancy/Mearls/Luke Crane panel a post or two above this one) that they will not be publishing 5e material at the sort of rate to make that sort of consumption of D&D material feasible. Hence, it seems that you may inevitably feel that the game/the settings are not supported to the standard that you desire
I'm not saying that that is a good thing or a bad thing. That you are right or wrong. That you should go quiet or speak up about it. It's just my prediction, based on the little you have posted about yourself and the little bit more that Mearls has told us about WotC publication strategy.
I've indicated my criteria for "support" over a couple of posts: can a new player, who wants to start a game set in GH, do that easily? And I think the answer is yes. Five to ten years ago that was not the case, because collecting all that out-of-print material was not easy. Now it is - it's all back in (digital) print again, on DriveThru. All that's missing is a really good catalogue/index. You characterised this view of "support", upthread, as asinine. By your standards that may be so. By my standards it is not.
I've already explained, upthread, how I went about starting a new GH game. In my case I used the stuff on my shelves; but were I a new player I could have bought all that stuff with 5 minutes of effort on DriveThru.
Over 15 years ago now I started an Oriental Adventures game. Again, I used the stuff I had on my shelves, most of which I'd managed to pick up second-hand over the years. Today, I would be able to pick up OA1 to OA3 (the latter, in particular being an excellent module) from DriveThru. (The later, FR-badged modules don't seem to be up yet, which is a pity - OA5 has fun bits, and OA7 is terrific.)
The availability of these various products for these various worlds is support for RPGing in those worlds.
For those who want more
fiction of those worlds, Mearls said back in 2014 that RPG book publishing probably wouldn't be the vehicle, and Chris Perkins has confirmed that a week or so ago. So keep your eyes and ears peeled for Perkins's surprise!