Sounds woke!
Carl Schmitt's Friend-Enemy Distinction is not just "there are enemies, so we should band together to fight them."
Schmitt's theory of politics, which is exactly the Friend-Enemy Distinction, relies upon that idea plus two others: authoritarian submission and totalizing scope.
Schmitt's theory is predicated on his other political theorizing, which begins with his model of political sovereignty. The sovereign is he who decides the exception, including when to declare and fight the enemy.
In his Friend-Enemy Distinction, the enemy is a public enemy who is declared by some recognized authority structure. This is a totalizing and polarizing declaration. Everyone subject to that authority structure is required to recognize the enemy and fight it or else be declared an enemy as well. That is, it's basically cancel culture.
The enemy is who the authority structure (or sovereign) declares, and the friends are the friends who fight the enemy. Anyone who doesn't fight the enemy is complicit, thus also an enemy.
This is totalizing and polarizing. You don't have an option to disengage, and you don't have authority to question the declaration. The authority structure declares the enemy, and you pick a side. That's it. No questions, no disagreement, nothing.
We call this totalitarianism, by the way, so it's not surprising Schmitt used it to justify the Nazi judicial methodologies.
This is also how the "democratic centralism" of Communism works, by the way, in the dictatorship's declared primary function, which is suppressing and destroying enemies.
This is why Schmitt wrote, while a Nazi, "there is no normal state that is not totalitarian." He couldn't have praised the Nazi Experiment more in the same pieces, by the way.
The way the Friend-Enemy Distinction works for everyone who doesn't belong to the authority structure is by authoritarian submission (combined with authoritarian aggression). The enemy is declared; you submit to that authority (or else); and you aggress against that enemy (or else).
There's no sidelines. If your neighbor doesn't want to join the fight, he's your enemy now too. Racist or antiracist, with no not-racist, is the same logic. Trans ally or transphobic bigot, with silence as complicity, is the same logic. This is totalitarian submission and aggression in a polarized political environment organized against the enemy.
Schmitt's argument is that this is actually how politics works, by definition. That is, everything that is political works this way. This is the defining characteristic of politics, from which everything political follows. Not the methods and means by which authority to organize the polis (city) are recognized, authenticated, transferred, etc. This, and only this.
This is an abominable doctrine. The people who have been seduced by it, Left and Right, become monsters.