That's the point really. And it's not inherently a value judgement to say something is a social construct. Using it as a value judgment usually is meant to convey that some secondary attributes are not inherent, or even more so, just historical by-products and might need rethinking or recontextualisation. Being a woman and being of the female sex might seem to be identical, but womanhood is not the same as having a certain genomic makeup, and therefore womanhood is obviously a social construct. The video above even outlines how female-Ness might be considered a social construct but I'm not smart enough to explain that to you where abigail will do it much better.