I'm postulating that any modern CRUD app framework has Monads, Monoids, and other categorically inspired structure, even if they don't call it that or have a way to abstract over it.
If it isn't called that and doesn't have a way to abstract over it, there's a very good chance that many of the logical Monads/Applicatives/Monoids/etc. are subtly not implemented as those things, resulting in equally subtle bugs.