I love .NET the platform -- the VM is absurdly efficient (almost too efficient, making egregious algorithm choices functional), and C# the language is superb and absolutely first class. There is nothing that shames either of those contenders, and I would argue that there are few that even legitimately compete with them.
Having said that, I couldn't agree more regarding the community. When MVC came out my only excitement about it -- given that I had been doing something better with .NET for closing on a decade -- was that the default baseline would hopefully be better than the terrible abomination that is WebForms (a construct either made to cripple web development, or to hold the hands of Visual Basic developers with a big viewstate diaper). But otherwise the excitement was hard to accept because it wasn't like it was actually something new, or something that you couldn't already do yourself with minimal effort. I'm seeing the same thing with some of the concurrency additions in .NET 4, where some trivial constructs are blessed with some syntactical sugar and it's treated like it's a new revolution in development.
Which brings up another oddity of the .NET community in general: There is a tendency to embrace and vigorously adopt whatever abstraction Microsoft grunts out, regardless of merit or actual value that it adds. The simplest need becomes layers of poorly contrived, poor fitting abstractions, where developers instead of asking "why should I use this?" instead are too busy worrying about "why didn't you use that?" The former question is much more valuable, but the latter is the defensive reaction of too many. LINQ is such a tool that is, in my mind, used for evil far more than good, but because it's a part of the gamut you have to mash it in wherever possible.
I think the word we are looking for is "fan club". A community participates, a fan adopts and loves. A community is bidirectional. Whatever interaction happens around Microsoft's products is not. It's interaction between fans, not between the fan and the object or the creator of its devotion.
I develop on the Windows platform since its inception and I'm not aware of any Microsoft community you refer to. I know that there are millions of people who develop with the Microsoft tools and obviously the more people use something the more that something gets abused.
On the other hand try getting a job in a decent company based on tech that is also a Microsoft partner and you'll be torn into pieces with the questions about deep platform understanding.
I'm not talking about outliers. I am talking about the majority of the user base, with few exceptions. To put a bit of a bigoted statement into this, let me say that traditionally Microsoft had several development streams, with the least talented, least motivated career developers finding the Visual Basic stream. The streams converged and it is all the worse for it.
To use the search engine "index", it's a quick way to gauge how frequently a user base dares to go outside of the trivial. With .NET I am frequently amazed when I'm trying to do something remotely complex and in looking for people discussing the topic, find nothing but a few unanswered questions via search engines. It has always disturbed me, and it in essence speaks to the linked article's point.
Comparing the .NET user base with the PHP user base also says a ton about its technical prowess. PHP is the Visual Basic of web development - it's considered an entry-level language and has a lot of problems. That said, Visual Basic paid a lot of my bills between 1991 and 1995.
Having said that, I couldn't agree more regarding the community. When MVC came out my only excitement about it -- given that I had been doing something better with .NET for closing on a decade -- was that the default baseline would hopefully be better than the terrible abomination that is WebForms (a construct either made to cripple web development, or to hold the hands of Visual Basic developers with a big viewstate diaper). But otherwise the excitement was hard to accept because it wasn't like it was actually something new, or something that you couldn't already do yourself with minimal effort. I'm seeing the same thing with some of the concurrency additions in .NET 4, where some trivial constructs are blessed with some syntactical sugar and it's treated like it's a new revolution in development.
Which brings up another oddity of the .NET community in general: There is a tendency to embrace and vigorously adopt whatever abstraction Microsoft grunts out, regardless of merit or actual value that it adds. The simplest need becomes layers of poorly contrived, poor fitting abstractions, where developers instead of asking "why should I use this?" instead are too busy worrying about "why didn't you use that?" The former question is much more valuable, but the latter is the defensive reaction of too many. LINQ is such a tool that is, in my mind, used for evil far more than good, but because it's a part of the gamut you have to mash it in wherever possible.