I am in the process of checking out Catholicism. I have reservations like what the author is talking about above...but I am not sure that what us Protestants think the Catholics believe is accurate, yes I know he is/was Catholic. Whether I convert or not I will always have great respect for the Catholic Church, as I do most all Christian Churches.
I suggest you investigate the information at Berean Beacon. That is a website for the ministry operated by Richard Bennett, who served as a Catholic priest for decades before he was saved. To get an idea of who Richard is, you might start with either watching or reading his testimony and then go from there.