Countries that begin with Two Consonants

Y can be, and often is, a vowel. The only cases where it matters (Syria, Myanmar, Kyrgyzstan and Cyprus), the letter behaves as a vowel instead of a consonant, so it makes sense to treat it as such.

You can't just declare something by fiat like you are the king of the English language! I would argue quite the opposite! Y is used as a vowel far more often than it is as a consonant. If you know Spanish, the Spanish name for Y translates to Greek i. I might be wrong, but about the only time that I can think of where a Y behaves as a consonant is when Y is the first letter of the word. Straight from Merriam-Webster:

Y is considered to be a vowel if…

The word has no other vowel: gym, my.

The letter is at the end of a word or syllable: candy, deny, bicycle, acrylic.

The letter is in the middle of a syllable: system, borborygmus.