Dr. Drang's blog has been in my RSS feeds for around 8-10 years. While the author postulates about math or physics that I can't understand, I love the software parts (some of which I can't understand literally, but understand theoretically).

I was a hardcore user of TextEdit (text only mode) until SublimeText and vim replaced it. I never would have thought to need to hide the toolbar because I always loaded it as a plaintext editor and I had to go look for a way to hide it in RTF mode to verify that Drang was right about not being able to hide it. Confirmed, can't find a way to hide it. Didn't bother me before I was a plaintext person.