Then they should have taken better care of their cat. Note that I said if it's wormy and doesn't have a chip.

I say this a cat lover that never lets our cats outside. There is an argument to be made that almost all housecats should be eliminated through whatever means necessary. The statistics on what they do to ground nesting birds, songbirds, reptiles, etc are pretty depressing. Anything that gets them off the streets and inside is good, in my opinion. They are an invasive species almost everywhere they live.