charliehall,
The halachah is that if someone is a kosher eid you accept their kashrut — or at least their testimony as to what they have done in their kitchen.
I don’t think the issue here is that the OP rejected the campus rabbi’s testimony of his kitchen kashrus. There was never an indication that the campus rabbi was deceitful about his standards. The issue is that the OP is uncomfortable with those standards.
Another halachah is that when you settle in a new community you accept its halachic norms.
This statement may be too general, and even so, the key word is halachic. Certainly if the OP felt that something counter to halacha was taking place, she shouldn’t adopt it. I would also argue that a college campus is not a community in the traditional sense where this halacha would apply.
By not doing these things you are following a different religion from Judaism.
Sorry to be so blunt but this is the kind of mishigas that divides the Jewish people.
I would imagine that in a popa_bar_abba YCT themed thread you would argue that placing people outside the bounds of Orthodox Judaism is divisive. It’s interesting that you are so quick to do it here. It’s also surprising to me that you would direct this kind of statement at a college student who is trying to uphold her religious standards.