Intent is, in my view, what is crucial. If someone compares some tragic event to a silly or incomparable event, but does so with no ill intent against people tied to the tragic event, then it is not logical to accuse him of being racist or against a people.
For example, if some kid is playing with legos, and compares the fall of Constantinople to having his favorite lego model fall and break to pieces, it isn't something which can reasonably lead to animosity by a greek person (or other proponents of the restoration of the Empire).
It won't be the same if it is a comparison meant to put down. In that case, I agree with you and will help organize the crusade.
For example, if some kid is playing with legos, and compares the fall of Constantinople to having his favorite lego model fall and break to pieces, it isn't something which can reasonably lead to animosity by a greek person (or other proponents of the restoration of the Empire).
It won't be the same if it is a comparison meant to put down. In that case, I agree with you and will help organize the crusade.