Is it really helpful to accuse people of "getting worked up" when they have an opinion you disagree with? This is a rule I've experienced in person and yes, it did feel like the DM going out of their way to abuse martials. It's something I really don't understand but something I've seen time and again. Weapons breaking or fumbles, heavy armor coming with extra penalties, regularly setting up situations where armor and weapons are forbidden but spell components and holy symbols are not.
It's a pretty common theme for DM to want to nerf fighters in ways they never do for casters. I'm not upset about it, I'm not getting worked up about it. I'm just pointing out that I've seen clear bias from some DMs over the years and it is annoying when similar penalties are never ever applied to casters. Or am I not allowed to admit annoyance?