It's an odd thing when people simultaneously express empathy while simultaneously deriding other people's empathy.
In the last two weeks, more people have been killed in Sudan than in the entire two years long war in Gaza. So is it cool to say you're out of touch for having empathy about Gaza while not caring about Sudan. You're in the wrong because you care about a lesser number of people that died in the past because you don't care about people who are dying in Sudan right now?
I wouldn't say this because this seems like psychopath behavior to me. Feigning that you care about people dying while dehumanizing others that have died in the past.
The people that died on 9/11 weren't evil imperialist colonizers. They were just people going to work at an office. Or fire fighters that were trying to save people's lives. Seeing the collapse of those buildings meant witnessing the deaths of thousands of people all at once live on TV. It affected people that have actual empathy for human life, psychopaths that can only act like they have empathy on the internet (without actually having any) can't understand the impact this had on people.
If you're characterizing it to being wrong for being impacted by the deaths of thousands of people, maybe stop and think about what you're doing and why you're doing it.