How do I know that arguments against the revised rites are false?

I’m looking for some some reassurance, for lack of a better term, that the arguments of some Catholic traditionalists against the validity New Mass and the revised rite of ordination for priests are not true.

In the end, it comes down to whom you trust. For the Catholic, trust must ultimately depend upon Jesus who promised to be with his Church until the end of time and to protect his Church against error in matters of doctrine and morals. Do you trust in Jesus’ ironclad, unconditional promise to protect his Church, or do you trust in certain individuals who have refused to trust in Christ and in his Church over and beyond the limits of their own knowledge and experience?

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