They can't fix their problems, and so they just mask it
Religious thought dictates that if your life that others can see does not live up to what is expected of you then you should “fake it until you make it”. In other words, don’t let anyone know your dirt. Just put on a happy face and pretend that it’s all good, even if you are really a big mess.
Could also be a referrence to the pedophile scandal in catholic church where high church officials were exposed to have molested children throughout decades of their service. Catholic Church acted actively to sweep this case under the rug. First denied the whole thing, and seeked no prosecution for priests and bishops involved in the scandal. All they would do was transfering members of the church involved to different states, cities or countries in order to kill this case. By that they also helped them to escape the hand of justice since sexual abuse of children is a severe crime for which normally long years in prison can be served.
Just as Herodias masked her sin/problem by getting rid of John, likewise, some people choose to hide their problems, missteps and sin, as if covering it up eliminates the problem.
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