OP had only

Indeed. Equally, the OP didn't use a void context and a capture variable per Re: Capturing regex from map, but that didn't stop you posting a polemic troll falsely equating the two (despite that you'd already pointed out they were not the same) for no reason other than to have a personal dig.

The difference between your post and mine, is that mine is intended to point out that the construct -- a regex within the list context of a map assigning to an array -- is very powerful, even beyond the simple use the OP put it to. And that if you take the time to understand why the OPs example works, then the other more powerful uses -- such as the one I demonstrated -- are equally easy to understand and therefore utilise.

FWIW:

Not very much. Actually, a negative amount.

All you did was put the regex into a localised list context by constructing a scoped array; and then convert that array to the list that would have been constructed had you left things alone. That's pointless make-work.

Anyone who understands that assigning a regex to an array assigns the captures; is equally capable of understanding that the same regex in the list context of a map statement assigned to an array will do the exact same thing.

You understand it. But you somehow think that other people won't. That you have to clarify the obvious for them by some utterly pointless make-work. You are advocating that 'other people' should dumb down their code, because some other 'other people' might not understand it like you do.

Suggestion: do not seek to intellectually diminish those 'other people'; seek to educate them.

If you can understand; and I can understand it; it is a fair bet that with just a little exposure; they will understand it too. It's neither that complicated, nor undocumented.