Why do we tolerate neo-Malthusians constantly whinging about overpopulation?

Genuine question.

The solution to these peoples problems is suicide. They believe the world is overpopulated, ergo they should kill themselves and help solve the problem they believe they have identified.

On other platforms I can’t tell them to kill themselves or I’ll get booted despite the fact it’s literally the logical conclusion of their own argument.

Why shouldn’t we meme these pricks into an early grave rather than allow them to shift the Overton Window?