Let's see this thing (I think I've seen this before though):
-As said before, they tried to make Jaune the Sokka or the Krillin of the show, and didn't hit that mark. He was the everyman, and that description given screams some SJW bullshit. As for the harem thing, isn't that just what happens when you have one main guy in a cast of chicks?
-The thing with Yang was they tried to have her being a carefree Barbara self insert AND a big sister that was burdened with the responsibilities of a mother figure at the same time. It didn't really work. Also, when was the last time Yang showed any bimbo esque behavior? The Yellow trailer?
-Ruby is not a deconstruction of anything. She's your typical Weekly Shonen Jump "I want to be" style of protagonist. Also, I think the show already had Ruby as that "small happy child who wanted to save the world", and they just changed things because people complained the company mascot was being upstaged in her own show.
-As for "Yang isn't fun anymore", compare Yang to V1 and the Yellow trailer to how she was after she lost her arm. There's trying to have a character be serious, and then there's being Eeyore wallowing in self-pity.
And then there’s just being perpetually mean spirited. Having a case of resting bitch face or just having an attitude of “I’m above this” amd “I hate everyone and everything” and “everyone here is stupid except for me” or just having this scowl that telegraphs what you’re about to say is going to be said in the most condescending way possible (Exhibit A of this being Mindy Kaling’s Velma).
-Why yes, people did expect a fighting school anime. That's what they were given. Because Monty designed it that way. And Miles and Kerry were the folks he turned to in order to have his show be something above a Flash animation to be plastered onto YouTube or Newgrounds. Sometimes it's okay to adhere to expectations. I can only assume this Citadel person wanted RWBY to be the most pretentious bullshit imaginable akin to Gundam when nobody in CRWBY was interested in the slightest.
As for RWBY being a complex feast with nuanced experiences, I don't get it. I think it was well established that the "bologna sandwich" we had before was working just fine. And lots of what came afterward was just dud after dud.
I don't think RWBY "deserves" a smarter audience. I just think RWBY's current audience just wants to feel smarter than it really is.
Or Ruby, who is canonically a Mary Sue now, because she's been acknowledged as perfect in-universe. Such nuanced and impactful writing!
Honestly, if we're talking about V9, the most take I've heard was "Ruby is reincarnated as herself because what other option is there? Relearn what she (and by extension the audience) already knew about Salem? Spend time just retreading old ground?" Just want to waste the audience’s time?