I'm personally very interested in how LLMs work under the hood, but I don't think everyone who uses them as tools needs that. I don't know the wiring inside my drill, but I know how to put a hole in my wall and not my hand regardless.

The thing is that if you actually learn how they work, they lose all of their magic. This has happened to anyone I know who bothered studying them and is not selling them. So I'd rather people learned. Knowing how a drill works doesn't make you any less likely to use a drill.