You have committed the sin of presumption, the assumption that God will bless a nation that is confirmed in sin. That God will just let you slide. God's judgement fell upon Israel and Judah despite the pleadings of the prophets.
America got to this pass not because of "freedom of speech" but because bad judicial decisions in the 60's struck down obscenity laws. This can be reversed. Of course porn will never be eliminated entirely, but returning it to the level of the stag film instead of a multibillion dollar industry would be a great victory.
There is nothing in the least "small government conservative" about your libertarian, ACLU, Hollywood agenda of moral anarchism. The Founding Fathers understood that only a moral culture can be free. The fewer inner moral restraints people have, the more laws they need. The more they will demand the state protect them from the vices of others.
This is the fatal flaw in libertarian ideology.