There was an explosion of concern for sexuality and force because mankind was at that level and they took the teachings that way. Mohammad was a man of war and had wives. Christ was a man of love and peace and is sexless. Mohammad came to an early-adolescent people. The end of that adolescence was when the Bab came.
Every Revelation is the choicest fruit of the previous Revelation.
At the time of Bab, we still saw wars and defense - the end of that era of adolescence. The choicest fruit was maturity - Baha'i Faith. Baha'u'llah taught adults in the new Revelation. The more aware we become, the more prone to shame we may become. It is required, but very few people have it.