Facebook employees are not adequately representative of the population as a whole. They lean overwhelmingly left and as such I would take their "blowback" with a grain of salt.
I would have used the words "anti-abortion", not pro-life, and "Monocultural", not "Traditional".
But there is bias in all of us.
"Why do you see the speck that is in your brother’s eye, but do not notice the log that is in your own eye?"
Yes, there are things more dangerous than someone who views themselves as objective while sanctimoniously berating other people for having "biased" views. I can name a great many.
This playbook is depressingly familiar around the world now. Relentless constant pressure to delegitimise institutions at every possible opportunity. Day after day. Week after week. Month after month.
Just a few recent examples. UK with Dominic Cummings, Australia with the fires, India with Hindu hysteria, US with.. well everything.
This however, is still a problem for Facebook, and the greater society, which seems to disagree with them more and more.