I don't think that's accurate--it could still be made to work with e.g. monsters if we want.  This comment should instead inform the reader why we only this to apply to players.

Imagine if monster AI were improved to follow players across rooms.  Would you want monsters to die in firewalls as they zone?  If so, the comment should explain.  If not, you could mention that it theoretically should apply to monsters also, but it's not needed today.