Has anyone experienced this mentality at their work?

At my old job I worked for a pretty reputable company in their factory and obviously there was lifting of items involved but it was unwritten policy that only the men were allowed to lift stuff up over 5kg and women didn't. There were many (not an exaggeration, there were easily 500 employees over 3 shifts) women who would straight up tell me to lift something because "that's the mans job"

Oh so I have to break my back and hurt my knees (my knees are fucked I can't squat anymore) just because a woman won't lift anything. In hindsight I should have complained to the bosses but they're all women anyway. Most items would weigh only up to 10kg and the stuff that was 10kg, 15kg, 20kg+ Was marked.

I find it offensive to look back and see just how bad it was but I was 18 so I wasn't too keen on starting trouble. Any time I said "no you pick it up" I got hit with the "mans job" speech.

It's funny how a mans job meant standing up all day lifting heavy items and the woman's job was sitting down in comfy chairs sorting stuff out.

It's funny how women want equal employment opportunities but you don't see them lining up protesting for bricklayer or construction work. Fuck that hard work that wrecks your body that's a mans job!