Sure
Robin Williams, the female that wrote The Mac is not a Typewriter, also?
Isn't she just an American computer manual writer?
So what you are referring to specifically is some sort of pseudo US online grammar that people use today because they are too lazy to hit space twice and properly segregate sentences.
You do realize that this comes from a nation where the majority of citizens don't understand the difference or when to use THAN instead of THEN, right?
From what I have heard, the reason the second space was dropped in computing has nothing to do with MS Word, it was due to web code.
When writing HTML, no matter how many spaces you enter in the code, most browsers render one space. Therefore readability is deemed to require one space.
Proportional fonts, online, make the second space irrelevant, unless typing in Courier (which I usually use for print publications) or some other non-proportional font.
I write for print, therefore I usually add a second space; if I don't, the editors do it for me and then harp on me about it.
One editor's office has a bike rack next to her parking space, when I park there, I always straddle the space and take up two spaces. So she always reminds me that writing is like her parking space, so why do I take two there but why only one in my article?
As far as typesetting is concerned, two spaces after a period and one after a comma.
For readability issues, regardless of font style, most readers find that a double space after a period offers a more recognizable break from one sentence to another.