How is this different from all those "Hello John! Welcome to Phoenix, Arizona!" kata?

What makes this not a duplicate?

( I haven't gone looking for links to exact duplicates. Can we for once assume there are duplicates without a link? Because there are. )

If you think duplicate content is not a problem, please see the Kata Best Practices - Make sure content is new. That's not my opinion, that's ex cathedra.

Wow... really 100% - 8kyu? kata with a single expected result;-)? What's the difference to all these other really weak katas last time, without random tests, wondering that they are called "kata":-)...?

function exclamation(word1,word2) {
  return "This is an exclamation!";
}

Can you kindly pinpoint where in the description it is stated that this would not be a valid solution to this kata?

I'm taking in two words, I'm returning a sentence, in the form of a string even, and I'm ending it with an exclamation mark.

Or add the puzzle tag.

No sample or random tests.