Square, it’s in the gemara, not the medrash. And have you ever heard of the sifri/sifra? They’re medrashim which are halacha.
The dvar Hashem as relayed through chazal in the gemara says if you do this, Hashem will permit your flesh to be hunted like animals of the field.
That’s not a mussar vort or a story with a lesson. It is a reality, and it happened when the heretical, G-d hating zionists violated the shvuos.