I did some digging about what the "Mk 75 Tigerwolf" fires. It fires:
a training round
rocket-propelled AP round
rocket-propelled thermite round
rocket-propelled HESH
rocket-propelled WP-I
rocket-propelled grenade ammunition
canister round
flechette round
rocket-propelled grenade ammunition but anti-infantry
thermobaric round
15 kiloton nuclear round
mine-laying round
GLATGM
GLSAM
One issue I have with the Tigerwolf, is that it contradicts what he has said are bad design choices, like 6 man crew, 2 loaders, new technology, fitting the largest gun possible on a chassis, etc. It makes him seem inconsistent and diminishes his argument.