Arguing for population reduction isn't lazy. Arguing against it by throwing a bunch of loaded language at it while never presenting an actual counterargument definitely is lazy, though.

The moment you describe it as "slaughter," you've completely lost me. A gradual reduction by having children at below replacement rate isn't "slaughter" and doesn't in any way imply that future generations are somehow bad or unwanted.

If population reduction really is such a bad idea, you should be able to come up with much better arguments against it.