Your untrained eye took the # for comments, but I'm not sure that generalized to anyone's. Plenty of languages use # for other things: Smalltalk uses them for symbols, Clojure uses them for reader macros, OCaml uses them for method calls, Haskell can use them as an arbitrary operator, Lua uses them for length, C and C++ use them for compiler directives. See https://en.wikipedia.org/wiki/Number_sign#In_computing for a list.
Admittedly, Python, Bash, Perl, and Ruby use # for comments, so you do have a point, especially since Python is such a common teaching language.
Admittedly, Python, Bash, Perl, and Ruby use # for comments, so you do have a point, especially since Python is such a common teaching language.