I have seen this sort of rhetoric more than once right here on FR.
There’s a difference between people who say it and people who actually do it.
Personally I am pretty much in favor of anything that dissuades ANY illegal alien, from ANYWHERE, from entering the country illegally. They have no right to be here, untraceable.
Plenty of illegals murder American citizens every year. More than enough reason to use everything and anything to keep them from entering illegally.
Sadly, you are right...