Congress shall make no law respecting an establishment of religion, or prohibiting the free exercise thereof; or abridging the freedom of speech, or of the press; or the right of the people peaceably to assemble, and to petition the Government for a redress of grievances.
Now you may notice first off that the Amendment refers to Government's actions, in particular the Congress. It does not, for example mention Football. This Rush guy and his loon supporters would have you believe that his 1st Amendment free speech or free press rights are somehow being screwed with. Umm, the guy makes gadzillions of dollars spewing crap over the air waves and he's somehow, uh, infringed upon?
The other piece nonsense is that the left is crushing the dreams of conservatives, or more particularly, Rush, by stomping on his free speech. Rather simply, it would seem to be a case of Rush can say what he wants to and nobody gets to call BS. I would kind of think that this is actually an example of free speech in action, Rush says what he does and some other people state that someone who says that is a dickhead and would be bad for a sport. Now I might take that a bit farther, like doubting that his oxygen isn't an entire waste or that the excessive space occupied by his carcass should be condemned once vacated, but it would be unkind, so I won't.
What has his people (and himself) upset is that this argument broke out in public and the side that business people listened to was something other than that one that Rush stands on. The government didn't say anything at all about it or try to do anything about it, business got done. Rush is perfectly free to continue to blather on, he's just learned that free speech doesn't mean consequence-less speech. When enough people don't like your horseshit it has outcomes in a business world that is based on perceptions - like fandom is.
I don't watch much football and I've never paid any attention to the Rams but people do watch and do pay attention to the Rams and a bunch of business people decided that dinging Rush's fans was better than having his money. Hey Rush, when you're too offensive to take your money in this country - buddy you're an asshole.