Why do so many Christians take a passage about dealing with sin in the Church and turn it into a "prayer of...?

You make many good points but I think you miss a point. You have to view meaning in Bible holistically. If two or more believing Christians gather together to pray correctly they DO get their prayer. Been there...done that...will do it again. BUT correct prayers are those that accord God his right to do as He wills, and correct prayers glorify God as He seeks to be glorified. Pray for personal salvation, pray for turns of heart, pray for an increase of faith and humility and meekness- and God will accord those petitions. Pray for health, wealth, church buildings, whatever.... that is not correct prayer! The Bible only speaks the truth- it is our understanding that lacks, Si?