No, it isn't "so much for one example". Those things are happening in other places, even if they are not happening as often as in the past. Here's some from just two years ago.
Meet the People Fired for Being LGBT in 2013 | Advocate.com
Notice something about most of these people? They mostly worked in education or coaching. It is happening. It isn't going to happen in large numbers because of many reasons (although we may see an increase in firings in many states that were forced to allow same sex couples to marry since now they can claim their spouses legally in their jobs).
And pushing to pass laws for religious exemptions in public accommodation/anti-discrimination laws are at least one way people are trying to get around laws that would otherwise not allow discrimination against in employment and/or housing or other areas covered by such laws.
There are also plenty of states that have laws that do specifically target homosexuality, or work towards attempts to circumvent recent (as in the last 10-12 years) SCOTUS decisions that advanced gay rights.
The 5 Worst States for LGBT People | Rolling Stone
And relatively speaking, discrimination based on race or gender or religion shouldn't reasonably happen either, but that doesn't stop us from having protections for those characteristics still exist in our laws. It is a precaution because there still are people who would fire or not hire people for being black/white/Asian, a woman/a man, Jewish/Muslim/atheist, disabled, or so many other things that are protected if given the chance. I'm willing to bet there are employers who would not hire me due to my reserve status if not for laws that specifically protect me from employers who would consider my status too much of a burden. And at least my situation can reasonably be seen as a burden to employers, unlike things like race, religion, sex, or sexuality.