Comment by toastal

Totally agreed. Coworkers will hate you if you start mixing in these styles into an existing code base. If you want to do FP, go switch languages (and likely jobs/teams) to something where the ergonomic are clear, concise, and idomatic—then the benefits become more obvious. It's a bit like teaching object-orientation through OCaml… just because you can, doesn't mean the community recommends it generally.