The man has his right to publicly state that the Bible is not the inerrant Word of God...... that's his 1st Amendment rights under the Constitution. Wonderful country, America. Any idiot can stand up and say almost anything he wants, within certain limits.
In this country, the man is also free to insult God and His word (the Bible calls it "blasphemy", btw), and free to insult and belittle those who believe in the Holy Bible and the One who inspired it, by the Holy Spirit. But, just to give a 'fair warning' to this individual: there is ONE THING he will NOT be 'free' to do: and that is to escape the Judgment of God for his words and deeds.