The first part about dogmatic or simple minded I'm not sure about, I just dont know who you are referring to or what you are meaning.
What changes are you suggesting? I agree that if the RRC is to be reformed then like any other time in its history it will be reformed by RCs themselves and no one else. External pressure or splintering will only delay the process.
However there is nothing within the articles of faith, traditions or practices of the church which make child abuse likely or acceptable, it has in fact been extreme abberant and deviant of the individuals involved to behave in this manner.
The cover ups, moving of offenders to other parishes, all the measures that the Church did take to try and deal with these individuals, and there where many but they did not work, where misjudged but aimed at stopping the offending behaviour and equally at avoiding the equation of the RCC and RC faith with offending behaviour which is exactly what has happened presently.
To be honest, I've said this before and its been given very little real consideration, the acts of abuse which took place had a lot to do with norms and values which where a lot more widespread than the RCC. For instance the power imbalance between adults and children, the reliability of children's grievances, the accountability of adults to children and for child welfare.