We have absolutely no context for the messages.

How does a cruel response help in any of the contexts you suggest?

There are very, very few situtations that warrant not being cordial to a fellow human being, as it’s almost never, ever, helpful. To either party.

How does telling someone they’re too ugly to talk to you encourage them to show you or anyone else respect?

To be clear, I’m not defending catcalling.

But there’s a difference between informing someone that their actions offend, and insulting their entire person.

The latter only leads to improvement in behavior about as often as it makes it worse.