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"As far as I knew, when I return a blessed reference to data in a subroutine, I have an object which I do not have to export."

As far as I knew, "le" is a proper French word, meaning "the".

I don't dispute that your code returns blessed objects. There is more to that than writing object-oriented code though. As per your update:

"I added comments to let you know what each object is supposed to do"

That alone is a warning sign. If the different objects do different things, then they should be instances of separate classes.

Your "objects" apparently don't have any object methods, so why are you using "objects" rather than plain old hashes?

package Cow { use Moo; has name => (is => 'lazy', default => sub { 'Mooington' }) } say Cow->new->name

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