You got downvoted because you included some traditional anti-Linux troll subjects with nothing to support those points.
> However, hassles really do begin to manifest themselves once users begin to really engage their PC in any number of ways. The vast majority of PC users fall into this category. In other words, they have non-minimal needs but are neither enthusiasts nor developers or otherwise employed in IT full time.
The vast majority of PC users do not fall into your category. They will be people who need to read email, do a little bit of simple web-browsing, create and open simple office documents (the vast majority of which would be fine with Libre-Office) and maybe run some awful accounts / stock / ordering software.
> WiFi, external displays, software limitations (e.g. video editing) are only a small number of issues that can and will manifest themselves. For the vast majority of PC users, this constitutes an unacceptable hassle.
WIFI is fixed in Linux and has been for a while, you don't want to run wifi in a business, and if you are using it anyway you'd have it set up by IT.
I'm not sure what you mean by external displays. If you mean dual monitors than very few people need two monitors, and those that do would have them set up by IT, and they'd work with whatever software being used. If you mean projectors then I have no idea what the Linux situation is. I accept it might be a problem, but that's a problem faced by a very small number of people.
A tiny number of people need to edit video. In the context of a local authority we can say that almost no one will be editing video.
OS X, in the context of local governments trying to save money, is - and I say this as politely as I can - a stupid suggestion. The hardware is much more expensive, is a lot more desirable to thieves, it has similar (or worse) dual monitor problems as you suggest above, it has similar (or worse) lack of software as you suggest above.