People Realize There's a Difference Between Physical and Social Problems, Right?

I ask this because it's not uncommon to see people chime into discussions about height discrimination with something like, "Well, tall people have less airplane space."

What does that have to do with height prejudice? It'd be like if a woman was talking about body shaming, and then somebody says, "It's easier to knock down lighter people."

Besides, I could just say something like "It's harder to reach things the shorter you are." We're not talking about physical issues, like trying to find clothes that fit. We're talking about social issues.

Take double standards for example. Everyone is allowed to insult a short guy's height, but if he fires back, people will claim he has a complex. It's rude to ask women their weight, let alone insult them about it, yet it's okay to discriminate about height which is less controllable. Stuff like that.