One shudders to imagine what inhuman thoughts lie behind that mask. What dreams of chronic and sustained cruelty.
On one hand, the Pyro could be under the influence of it’s mask and believes it’s in wonderland. The introduction of the Pyrovision into the game certainly supports that theory.
But, what if the Pyrovision is simply an item, a novelty that allows the other class (and us) to see what the Pyro sees, with or without it’s mask?