From the pov of an organism in a high-oxygen atmosphere, thats true. But on a planet with little to no oxygen in the atmosphere, it would have to be added separately, the same way we add fuel
Everyone has different experiences, but this post pretty much perfectly shows how people act where i live. There arent really any types of clothes that women aren’t “supposed” to wear, but men get a lot of weird looks if they wear skirts, frills or anything not seen as “masculine”