I feel like I have provided clear explanations and clear responses to what he has posted (and I've clarified when asked to do so). If that isn't sufficient for you, that is fair. But just declaring my posts illogical or not properly sourced, I don't know. Not really sure how to respond to this. If I haven't persuaded you, then I haven't persuaded you. But honestly what this feels like is you just asking arbitrarily raising the standards for giving an opinion on something.
I've made an extremely reasonable request, which is that you provide examples of the pablum you say this leads to.
If you really don't want to "put products on the spot" (which seems ludicrous unless you never publicly criticise works for being low-quality, but hey, maybe you don't), then PM me some examples. Anyone who has ever PM'd me hear knows I will not repeat anything said in PMs or otherwise make it an issue.
At least then I might be able to understand your perspective re: pablum. This is important because the only actual harm you're claiming here is "creatives" feeling "oppressed" which in your opinion, has lead to "pablum". Unless you are willing to explain further, then you should terminate that line of argument, because you're not willing to actually argue it. No-one is denying that some products suck, and some are better, but I've seen plenty of total trash which had absolute creative freedom, and excellent products created with a bunch of restrictions. And this is a very minor suggestion, not even a restriction.
If you don't like police metaphors, don't use police metaphors. It's hypocritical in the extreme to complain about them after using one. The reality is, no-one is being policed here, and the metaphor is actively unhelpful, as I hope I helped show.
I don't think I am required to cite anything. This isn't an academic paper. It is also an issue of not wanting to put products on the spot. All I can say, and I am sure people who share my view on this can also say they have this experience, I've seen a lot of gaming content that appears to be pablum because of the kinds of vetting being done. You can disagree. But you can't demand I provide you with citations.
What "vetting"? By whom? When? WotC has literally just decided to start doing this. Looking through history, I can't think of a single RPG product nerfed by "vetting" about this kind of language. I can see 2E was designed somewhat to avoid MADD etc., initially, but 2E certainly wasn't "pablum", and that was something very different - not a suggestion to be careful with language, but an organised campaign to specifically destroy D&D by people who didn't play it.
So I think it's reasonable that, without you pointing out any real incidents at all, and with not having been an industry trend (even now it's hard to argue it is), this is a fiction.
I can produce counter-examples all day, where books had total creative freedom, but were bad or mediocre, and sometimes wildly racist or sexist or the like to boot. I mean let's start with WoD: Gypsies - clear creative freedom, total trash on literally every level, and wildly racist. Indeed we could say White Wolf offered more creative freedom than TSR did or indeed most contemporaries of White Wolf, in the 1990s, but produced tons of terrible products. Indeed, one might reasonably go as far as to say that WW products which really pushed the boundaries on "creative freedom" in terms of acceptable content, were often lower-quality than their more mainstream products, on a variety levels. Amusing, often, but in a laughing-at kind of way.
So for you to claim that there is a correlation, apparently a strong one, between mild creative suggestions/restrictions (whatever) and "pablum", meaning completely bland and insipid products seems in need of evidence.
The only restriction I can see that does have some evidence that it leads to more insipid works is a much older one than any kind of language deal - it's requiring books to actually sell to a mass audience.