Social Science theories have a lower predictive value than common stereotypes.

Excellent point.

The only real sciences are physics, chemistry (really applied physics), and parts of biology.

The rest is bullshit. all of their "objective" evidence is surveys and a criminal misuse and mis-understanding of statistics. Even read the wikipedia article for Bayesian probability. It's disgusting. It's full of carefully chosen words to distort meaning and promote an agenda. Inside a wiki page about mathematics.