I think you have summarized it brilliantly in the intro.
I even read about a pastor who sued because his soul was put in jeopardy by J-Lo and Shakira's hips. Nothing more hyprocritical than this.
I think that Trump will go down in history as one of the few (infidel) presidents with the highest evangelical/religious support. This is worthy of serious study. It reveals some not-so-new truth about religions in general and their relationship to political power.
Trump could not have been any clumsier during his first campaign when it came to his religious convictions (not that he was any smarter on other issues), and yet he managed to gather the support of conservative groups.
It is obvious that these groups' main concern is not whether the candidate they support shares and practices their believes, but whether he will leave the status quo untouched.
Conservative mother should be more consistent with their defense of morality. As you rightly point out, there is plenty of injustice going on in the world promoted and pertuated by the very same leaders they support.