It's discrimination when a business owner hires a family member over a person better qualified.
There are many gays who also like to hire one another and work together instead of with straight folks. They have a culture. Many gays have businesses and hire gays and not many straights. That's also discrimination too.
“Experience should teach us to be most on our guard to protect liberty when the Government’s purposes are beneficent. Men born to freedom are naturally alert to repel invasion of their liberty by evil-minded rulers. The greatest dangers to liberty lurk in insidious encroachment by men of zeal, well-meaning but without understanding.” — James Madison