The title is misleading. As the content of the article explains, it mandates equal opportunity, not a quota.
And looking at its subtitle, I'm sure there are a handful of non-Christians who are actually employers who discriminate (likely also for religious reasons), and there are heaps of Christians who actually don't discriminate on GLBTetc. It's to target discriminators, not "Christians."
The content of the article "clarifies" these issues, but the titles lend the bill to being attacked on unfair grounds.
In the article, there is a line of "...the bill holds no exemption for an employer's faith or conscience, an omission that has drawn heavy criticism." If the article had an exemption, the bill would be meaningless. Most people who discriminate on GLBTetc do so for religious reasons, and those who don't would just use religion as justification anyway.
Overall, the journalism quality leaves something to be desired.