No, the training material for something like Python is orders of magnitude easier to get into than things like OCaml, Haskell, and Lisp. Python has doc and many many books taking you from A through Z. Many of these other languages have "A" and then pick back up at "S", but skip over "B"-"R". You basically get a feel for syntax, control flow, and a few other topics, but don't get the meat of why that language is different. Not everyone wants to learn by digging into open source projects.