I woudn't exactly call it consistent and design decisions are questionable. Even the article-mentioned

    def foo(*)
        bar(*)
    end

is some needless nonsensical bloat, who on earth complained "oh, saying def foo(a) is so 90s, we need to have option to replace it with symbol used for multiplication or pointers in some cases!"

It's mediocre language that happened to have some then-popular web framework written in