The question isn't how good Molina is. He's very good.
The question is how did he get this good?
Baseball players just don't suddenly, at age 28, go from 6 years of .688 OPS to over two years of .840 OPS. At least not without some help. The only time I can remember that happening was in the mid 1990's. Now what was special about that time in MLB?
I wouldn't be surprised if eventually, we find Molina on a list in MLB offices similar to the one from that clinic in Miami. In fact, I'd be surprised if we don't.