It's a bunch of baloney in my book, especially the ranting against open source software. I'm the only one currently on Linux in my family, but everybody is using Firefox for Internet, Thunderbird for e-mail, and LibreOffice for documents. Okay, they use Skype for video calls. But basically everything they use daily, aside from games, is open source or would also run on Linux. Yes for Linux you need to take more care when buying a computer or peripherals, but other than that there's no difference from user perspective if you aren't familiar with installing operating systems, or don't have enough Google-Fu to solve issues you run into. You'll need somebody to do all the installation work for you, regardless of whether you are using Windows or Linux.