Welcome to ProcessWire
I'll start off by saying that my only role here is administrating the forums, so I don't speak in an official ProcessWire capacity. With that bit out of the way, I can't say I agree with everything in the article those comments are attached to as they're mostly the result of trying to bend a blogging system to do something that it's not designed for, but I did move a website to ProcessWire a few weeks back because of the regular admin changes and what I personally see as inflexibility in the templates. I think my problem was that each time I checked out Wordpress (probably 6-9 months unless I was applying an update to that particular site) there seemed to be just enough changes to confuse me (esasily confused). If I was using it day in and day out it probably wouldn't have been a problem if I'm totally honest with myself.
I know part of runing a website for a client is keeping on top of updates, but I wanted a system that was simple to patch (in the case of ProcessWire I've recently learned that you can run multiple sites from the same core files, so there would only be one /site directory to update for all sites - something that I find quite exciting ).
I came to PW from a MODx perspective, and much as I loved MODx and the way it tried to keep things tidy with the use of snippets and chunks as well as prevent PHP in templates with it's tagging system, I was converted primarily by the jQuery-inspired API and also when I read Ryan's article on syntax and finally wrapped my head around the idea that a Page in ProcessWire is whatever you want it to be.
Following on from that last statement, one of my plans for this year is to build a fairly complex file download repository in PW. I looked at all manner of scripts for that task last year, and when I'd been using ProcessWire for a month or two this year I thought to myself "how hard would it be to build such a system in PW?". The more I thought about it, the more things clicked into place in my head and now, rather than trying to make two separate programs work together - and the invevitable issues with any third-party file download script not having all the fields I might want - I can do it all in one system and what's more I'm pretty sure I could build it over the course of a few weekends.
The thing that I quickly learned is that the majority of what I want to do can be done in ProcessWire. The majority of the functionality I requested early on, Ryan had actually already built and it was just a case of knowing the API functions (Soma's PW cheatsheet is invaluable once you've learned the basics), and there are exciting things on the roadmap such as multi-content fields and a page workflow are on the roadmap.
I think the biggest thing that keeps me coming back here though is that every suggestion you make is considered and everyone is friendly as well. It's not something I've encountered much before, and in some cases (not going to name the software) when I've constructively suggested things on other CMS forums I've actually felt likve I've been jumped on and told to contribute if I want a feature. Not everyone is a good programmer, but I think everyone can have good ideas and certainly provide valuable suggestions and feedback, often leading to Ryan putting a feature on teh roadmap or in the case of really good ideas implementing the code into the latest build seemingly overnight, and I think that sort of relationship is what makes this community really work.
Have fun with ProcessWire - I know I do
Oh, and there's no such thing as a dumb question - every CMS has a learning curve.