Earlier quoted context omitted.
We are different. For me it's exactly the "oh you changed it, never mind, I'll use it a bit differently from now on" situation.
Same here. I've already mostly adapted to the new editor. There's some annoyances, but I love not having to send to myself just to see what the message will look like and how Slack's version of Markdown will interpret my formatting.
Slack's good at engineering and development. They used to be good at UI/UX, but whoever over there in the text entry product design slot is having a case of the Jony Ives.