My thoughts:
* JIRA, still heavily used in many, many places. Not even close to being replaced in them.
* Evernote vs. Markdown: I have been using org mode and or plain text notes for over 20 years. Markdown was a welcome addition to the arsenal, but I tried the Evernote/Microsoft Notes back in the day... just went back to plaintext for notes+todo, it has worked forever and is good enough. Org mode is a very nice and "Fancy" tool on its own. But also easy to get started with.
Just some examples. I don't mean to be overly critical, it is an interesting and fun article about the tools we use as technologists, but it could do with a lot better grounding all around.