1) People are not being "kept away from BYU" - it's harder and harder every year to get into the school.

2) An anonymous internet post about rude people bringing dogs where they are not wanted isn't going to sway the opinion of a major private university.

But, other than that, great job! You nailed it! Excellent use of the phrase "cultural propagation"! Give yourself an extra big gold star sticker today. You totally deserve it.