This is actually a very good article.
I've written an essay that I've yet to submit on Square and Enix, the shield and sword of Square, and the decline of Square Enix. Basically the same stuff as this article.
It's been a downward spiral since FFVII as far as I see it. I don't see them recover.
For me, once Uematsu left, it was a big alarm bell. I didn't believe Sakaguchi leaving was important, as he has no real talent. I said that when Mistwalker began, and I see it was more than proven bby its track record at Mistwalker that he doesn't have any talent by himself. I'm more of the kind that believe Sakaguchi is an excellent catalyst, but he needs big talents in every area around him to be good.
Also, Square still has lots of talents, but not in enough key areas to be successful.
I don't know if Wada is a cause for their decline, but surely he's not the only cause.
Fortunately, Dragon Quest already has its small team of talented people, Yuji Horii first, that can support the series. Seems to me DQ is treated like the lesser franchise by SE, thus why they try to destroy it by releasing only a spinoff first this gen (and this is Wada's fault). But I feel DQ will crush FF and just take the crown, just because they took the right decisions since the first one, and despite a difficult transition to the last generation, managed to move the series.
The releases on XB360 are just the pinnacle of retarded decisions (again Wada's fault). Square just deserves what happens to them, and though I was a bit relieved that FFXIII went to the XB360, the decisions taken at the same time are just as retarded (delaying PS3 version for XB360 one). Given its development time and HD costs, I'm not even sure FFXIII will be a financial success anymore, despite being on two platforms.
I'm not really concerned about Square Enix. As far as I'm concerned, they can die since FFVIII. But the problem is that the JRPG genre will likely sufferif they die. Pokemon and Fire Emblem will still thrive, both being the pinnacle of their respective genre of JRPG (traditional and strategy JRPG). But retarded 3rd parties don't follow Nintendo, at least for now. At least I hope DQ doesn't die.
Funny that long ago, Square was the better company in my view, and Enix releasing only games I thought were bad. Now, I'm far preferring Enix.