Industrial Foregoing Version: 1.16.5-3.2.9

Titanium Version: 1.16.4-3.2.5.

The mob crusher doesn't kill naturally spawned baby Hoglins. I guess this is the case because usually you don't want to kill baby passive mobs. But Hoglins aren't passive mobs, they are hostile mobs, are in the hostile mob cap, spawn and despawn just like other hostile mobs.