Pacifism is often warmongering, indirectly. Pacifism that results in people being unable or unwilling to defend themselves invites violence from evil people willing to take advantage of that.

That's why pacifism is so often an evil moral philosophy. Especially when the pacifism is trying to impose pacifism on third parties. Which is what DarthCoin is doing here: he's accusing others of warmongering, and in turn discouraging Ukraine from being able to aquire weapons to defend itself. That will invite more war to steal what Ukraine has.