Look, Y isn’t a vowel.
No matter how often elementary school teachers get their students to repeat that annoying vowel rallying cry (“a, e, i, o, u and sometimes y”) there’s still no reason to the rhyme. A is a vowel, okay. E is one too, and I can support that. I can support the I and oh boy am I behind the O. And you gotta believe in the U.
But Y? Total vowel wannabe.