Universities do not have such a history at all. Yes, horrible things also sometimes happen at universities. But 'at the centre' since 'long': no. It's just an excuse for using appeal to emotion.
There is a common expression that 'something is about as effective as stabbing someone with a butter knife'. Someone might overhear you using that expression and may unsettlingly remember once being threatened with a butter knife. That sucks and if they told you, you would try not to use that expression around them. That would be a nice thing to do, showing empathy. What would not be a nice or emphatic thing to do for them, is demanding your expulsion from an event for using that phrase. Demanding you not use that expression any more would similarly not be nice or called for.
They are still the one with the problem. If they tell us we should help them and should try to take it into account. But they cannot expect strangers to take it into account, nor can they expect others to always keep it into account. There are too many people with too many different problems for society to function that way.
So, if any mention of a 'bomb', like this one, is 'unsettling' to you, you need help. We have a responsibility to get you that help. We do not have a responsibility to prevent you from feeling 'unsettled'.