This is actually quite simple.Kakashi on crack said:So then why is it "wrong" to call someone a player/slut if they sleep around a lot? It seems to me like you're just stating the obvious with this, you know?
It is still an issue twelve years into the new millennium because social conservatives produce the lion's share of native population renewal in pretty much all Western nations within the anglosphere. This almost without exception below the replacement level needed to sustain the current population let alone provide population growth required to sustain a modern capitalist consumer based society, so this is topped up by immigration but the catch 22 here is that increasingly the immigrants that are available also happen to be socially conservative.
Hence why it appears that progressive political thought has been stuck in neutral going nowhere fast for the last 10-20 years.