No, it doesn't need to be said again. People just need to read what has been said, and comprehend.
There is a point at which we've figured most of it out. That's all well and good. But society broadly needs to understand those things, and then conduct themselves accordingly.
We're not living in a society that accepts or understands that fact. A lot of societies around the world actually are. They are up and coming. WE are in decline. Even as a libertarian, we do NOT have to accept social abnormalities. We can actually reject them, and expect to inhabit a society that makes social norms acceptable.