I haven't seen any film on Ike's injury. When you watch the film on Chance's injury it appears the Princeton player offered a few words after the play. I have also heard that he did in fact talk some trash afterwards. Which to me makes the intent appear to be on purpose. "Horse collar" tackles happen every Friday night and thankfully they happen without injury. There is a reason they aren't allowed and Chance is a perfect example as to why.
With that said, when a student or group of students make statements on social media like Princeton has that takes this to a whole different level. The Graham transfer portal comment is actually pretty funny. The sign, the comment, and the picture is totally uncalled for.