5 1/2 years on, I would consider it a very safe bet that this resource will never be "free as in freedom", that it will always be moderated in some way.
Sites which refuse to moderate (out of some principle) become havens for spam; cracked software; cloned movies and music; pornography (including child pornography); insults and putdowns; gender and racial inequity; and even downright hate speech (as literal calls for genocide).
The matter of who gets to decide what gets moderated, and what the procedures for moderation are, will continue to evolve in time.
The system got modified so that regular users could not delete their Question once an Answer had been posted.
We are reluctant to delete Questions that have to do with MATLAB -- but we do delete spam as soon as we notice it. We are considerably less reluctant to close questions that are of dubious relevancy or do not show any effort. When we delete Questions that have to do with MATLAB, there is typically a legal reason (such as complying with the US laws about cryptography), or else we feel that the user is abusing the system (for example, attempting to cheat in the middle of an exam.)
The email system got modified so that contact addresses are not shown for the Contact button. However, Mathworks has not put in place a two-way blind mail forwarding system: if someone sends you email, you can see their email address, and if you then reply it is a direct rely that would allow them to see your email address.
Mathworks has put a lot of effort into improving the relevance of the search system.
The tag system remains as it was. Unfortunately most of the maintenance of the tags falls upon a small number of volunteers, as few people bother to tag well or bother to do deliberate searches for the purposes of tagging related material. Tagging is mostly individual manual labor; Mathworks compensated by improving their searches.
Installation questions are tough to answer without getting into the system having difficulty. People are still using (and asking questions about) MATLAB for XP. There is XP, Vista, Windows 2000, Windows 7, Windows 8, Windows 8.1, Windows 10; there are literally over 10000 security patches for Windows. There are dozens of anti-virus systems; there are firewalls; there are proxy systems; there are VPN systems. Within the last year or so, people have asked questions about .NET 2.0, .NET 3, .NET 3.5, .NET 4.0, .NET 4.5, and .NET 4.6, and likely will soon be asking about .NET 4.7. These matter on MS Windows because Microsoft choose to mark important components as incompatible. Within the last year or so, people have asked questions about Visual studio 2008, VS 2010, VS 2012, VS 2013, VS 2015, VS 2017, SDK 7.1, SDK 8.1, SDK 10, Intel XE C/C++ 2010, Intel XE C/C++ 2012, Intel XE Fortran 2010, Intel XE Fortran 2013, several MinGW versions, LCC (32 bit), LCC64 (64 bit), several releases of NVCC (Nvidia compliler), four different CUDA releases, and about 10 different NVIDIA GPUs -- and all of these are "installation" questions.
Within the last year or so, people have asked questions related to OS-X Panther (10.3), OS-X Tiger (10.4), OS-X Leopard (10.5), OS-X Snow Leopard (10.6), OS-X Mavericks (10.9), OS-X Yosemite (10.10), OS-X El Capitan (10.11), MacOS Sierra (10.12), and the forthcoming MacOS High Sierras (10.13); XCode 6, XCode 7, XCode 7.1, XCode 7.2, XCode 8.0, XCode 8.1, XCode 8.2, and XCode 8.3; various GCC versions for OS-X; and some commercial fortran versions for OS-X and MacOS -- and all of these are installation questions.
There have been MacOS Sierra questions for which I happen to have exactly the same Mac model, but for which I have been unable to duplicate the problem; for some of them I cannot get that far because the only way to get to that situation was to happened to have upgraded through several MATLAB and OS-X releases.
I had an install support case myself a few months ago; in working with Mathworks, I made the key guess that it had to do with my using OS-X case-sensitive file systems; sure enough, it turned out the add-on assumed case-insensitivity. Being from a certain technical generation, I would not have suspected that they did not support case-sensitive file systems; they, being from a different background, did not think anyone was using them.
Then there is the mess that is Linux; I have lost track of which Linux have been asked about.
Advising on installation questions are like offering medical advice to people based upon broad symptoms; there are just too too many factors.