No, but there's an ridiculous amount of programmers whose first language will have been Lua and have grown up with using first class functions and composition over inheritance from day one.

Well, you can inherit in Lua, right? In http://lua-users.org/wiki/InheritanceTutorial it's just

    setmetatable(new_class, {__index = base_class})

I've never tried Roblox, so I have no idea how often people do such things in it.