Bernd has nothing about Pacifism per se. It's absolutely clear the absence of violence must be the prime objective, an utopia humanity must strive for because every conflict is at the lowest level simply a pointless waste of resources. Bernd just hates most self-proclaimes pacifists because they refuse - or are simply too stupid - to understand that violence and the ability to afflict violence on others is sometimes necessary to avoid further violence in the future. All they ever have are arguments like "slippery slope!" or "but the nuclear holocaust!" or some inaccurate historic reference/analogy. Bernd has a couple of these "pacifists" in his private circle and truly believes most of them lean that way mostly for very selfish reasons instead of the actual "superior" understading of history, ethics, morality etc. they claim to have.
Especially the people who would rather flee than fight. The world is already full of bad people. If you allow them to take your land and control your emotions without resistance and flee, or stay hoping the new regime won't be that bad to you and collapse at some point anyways, all you're doing is increase the part of the world governed by bad people and give them a reason to come after you. It never ends if you don't put your foot down and then actually also defend that line where that foot is. Russia e.g. would have stopped fucking around long ago if NATO had simply shot down every military vessel crossing the border illegaly, like Turkey did in 2015. Sometimes such actions are necessary and obviously do work.
Cowering in fear never works though.