This person told me her husband won’t let her eat pizza during the 9 days because it’s not an appropriate food for mourning.
I disagree with anyone who thinks this husband is wrong. We should be jealous that this husband actively tries to mourn, just a tiny bit more, out of ahava for the beis hamikdash.
How many of us are trying to do that, rather than trying to distance ourselves from the mourning with “instructional” swim and the like?
You don’t agree that not eating pizza isn’t a way of expressing mourning. That’s your subjective feeling. But at the very least, this man is trying to do the best he can with what he has.