While these groups may do some excellent work with Christian charities, their primary focus is on fighting to have the rights of LGBT people denied. But over the years they've been able to frame what it is they do with those "pro-family" and "Christian" modifiers.
Chick-fil-A owner Don Cathy may deny me equality of rights, but I cannot lower myself to his level and deny him equality of rights. He has the right to ignorant opinions, and the right to run restaurants.
The Southern Poverty Law Center report is a sober reminder that we must remain vigilant in combating extremism. There are well-organized and wealthy hate machines waiting in the wings, poised to cause tremendous harm to LGBT people.