I notice that this thing you and others call empathy doesn't extend to the outgroup: if anybody doesn't subscribe to it, fuck 'em, is the general sentiment.
In this instance of course what you're proposing is very mild: you think they should suffer one another's company - which you imagine would be a terrible experience. Unless you further imagine that they'd like it? But my impression was that you thought they'd have a bad time, and since they're your non-compassionate outgroup, you very compassionately don't care.