Doesn't EVERY touch typist use the right shift?
Obviously not. As one example, Sean Wrona, one of the fastest typists in the world, mostly eschews the shift keys altogether and just presses caps lock before and after each capitalized letter.
Touch typing techniques are highly variable. For example, I typically use the right shift, even for letters on my right hand (maybe 70–80% of the time, with no intentional pattern), reserving the left shift mostly when I need to shift a number (7–0) or symbol key, or when typing keyboard shortcuts. By contrast, my wife basically never uses right shift at all.
Do people not know how to touch type anymore?
Well, first, most people
don’t know how to touch type. But second, there’s nothing inherently wrong with developing a personal not-by-the-book technique. My personal feeling is that several aspects of “standard” technique are suboptimal, or in some cases actively harmful (i.e. lead to RSI).
Just how old are you people?
I’m 29, and I was never formally trained to type. Though I did teach myself in a fairly deliberate way in about 5th grade.