It seems to be a very popular mindset in software development that efficiency isn’t as important because of how fast hardware has gotten.
How’s this for irony: I was hired at my current job as part of a team whose whole mission is to address performance problems in a large desktop app…that’s written entirely in Typescript!
It’s kinda funny how some are willing to develop a skill to great depth (you’d have to know JavaScript/TypeScript very well to write a full deal desktop application in it, and it probably involved a LOT of frustrating debug if performance is the main issue with it) but don’t spend any time on breadth to understand that some depths aren’t worth it.