Thinking about this a bit more, I guess what I am saying is that my experience simply doesn't line up with the premise of the article, in particular the first word:
I think that is it exactly....I read:
Often we find ourselves writing code that copes with optional dependencies; Code that will use a module to do amazing things if it's installed
...and thought - "why not just install the missing module then?"
I assumed I must be missing something because the author clearly knows their (Perl) onions but it seems they were using something genuinely useful in a place where it didn't need using at all. Glad I questioned it :)
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