'"Monoid" has no good real-world parallel. It has no related or relevant meaning outside of very, very specific contexts. That's what makes it "detached". It's off on its own, with an isolated and non-obvious meaning.'
It's jargon, but it's jargon shared across a few fields, which makes it more worth learning. And while it lacks a "real-world parallel" it has a lot of simple examples. Lists over concatenation, integers over addition, positive integers over max, negative integers over min... It's interesting and informative to observe why integers over max (or min) is not a monoid but is a semigroup.
It's jargon, but it's jargon shared across a few fields, which makes it more worth learning. And while it lacks a "real-world parallel" it has a lot of simple examples. Lists over concatenation, integers over addition, positive integers over max, negative integers over min... It's interesting and informative to observe why integers over max (or min) is not a monoid but is a semigroup.