In response to: “Akuperma: You’re still being silly. Why wouldn’t the proper pronunciation be part of the Mesorah just like vowels are? “
The proof is that diverse groups of frum Jews pronounce Hebrew differently. If the pronounication of the letters and nekudos were part of the mesorah, we would not have distinct accents among frum Jews, i.e. a Sefardi would sound like a Hasid (southeastern dialect), and a Teimani would sound like a Litvak (northeastern Europe dialect). This proves that the diversity of pronounciations is either a tolerable thing or a good thing, but definitely not a bad thing. It also shows that those that want to establish their pronounciation (according to their family’s or community’s traditions) as the “official” or “correct” one, are seriously misguided. Ha-Shem made it clear there is one Torah – but did not make it clear there is one way pronounce the last letter of our alphabet.
And I’m not discussing the Israeli/Zionist dialect, which is merely a combination of the obvious “mistakes” of all the dialects (not distinguishing Aleph and Ayin, or Daled and Thaled, or Saf and Taf, or Patach and Kametz, etc.), and actually demonstrates a well known rule that living languages tend to simplify over time.