I read your parent to be saying the opposite. That more people would be upset if Putin were using weapons like these, but no one cares when the US does. (Speaking of the Lockheed PSM, not nukes.)
I think it's pretty clear that ck2 was talking about using nukes.
> we're out of other weapons except these which seems wildly illegal to use especially on civilians
> https://apnews.com/article/iran-lamerd-us-prsm-lockheed-mart...
> Imagine if Putin was using those on Ukraine civilians but US uses them no problem?
Emphasis mine.