I'd be happy if people on HN would drop "Learnings." It just shows you never learned the word "lessons."

Agreed. Using that "L" word makes one look out-of-touch to me, and I'm disinclined to trust anyone using it.

Same for "performant". There are many ways that something can perform. Are you trying to tell me that something is fast? Why can't you just say that it's fast, and leave it at that?