zahavasdad,
A Hillel rabbi on a college campus cannot come off the same as a Charedi Rabbi and dictate to the students what to do, they will just leave.
I don’t think anyone here is advocating that a campus rabbi do that.
Its very important to give a good impression of Yiddishkeit. coming off as standoffish or elitist is not a kiddish Hashem.
If someone refuses a dinner invite because of allergies or celiac, does that make them appear standoffish? A Jew can decline food invitations, and as long as his/her demeanor towards the one inviting remains friendly, open, and warm, there is no issue of coming across as standoffish or elitist.
Should I eat at a non-Jewish co-worker’s house or go to his church to avoid appearing standoffish?