I think you've basically addressed all my points as well.
My quibble would just be with statements like "but there is definitely a correct and incorrect way to view them", and "but rather sad because these people are uneducated (this applies to all sports, not just baseball)."
Even within the sabermetrics community there are disagreements about what the correct and incorrect way is to view stats and prevailing wisdom changes over time even among the advanced metrics crowd. I would just caution that in addressing these issues with this highly intelligent and baseball knowledgeable crowd, it might be good to avoid using phrases that sound condescending and that might create the impression that you believe the science is settled and static with regards to the sport of baseball.