If setting a whole curriculum I see why forth wouldn’t be the only thing to teach. If you have an opportunity to do a course I think it’s one interesting way to teach some concepts in a different way. People will get scripting language exposure somewhere else, as the author said, Forth is a way to teach programming concepts without getting bogged down in syntax - one can focus purely on the mechanics of how a program is interpreted.

It’s similar imo to SICP (if it’s still taught) being in scheme, it’s extremely impractical from a “job skills” perspective but allows to focus purely on computer science concepts which is great.

To be honest, the author has Haskell as a second choice, that would be a much tougher sell to me, I feel like it has a ton of baggage you need to learn to even get started (I don’t know any Haskell)

Not sure they are that interested in programming, but FORTH is a little sweet language.

My first experience with it was Paul Lutus’ GraFORTH. On the Apple II it was ridiculously fast.