That site is alternatively called ‘catholic arrogance . org’ (I’m not making it linkable because I don’t want people to accidentally click it).
What would your instinctive reaction be about the tenor and direction of a website named thusly?
If you’re interested in becoming a Catholic, it would be better to listen to more authoritative sources. Leave such aggressively accusatory sites to stew in their own juices. They’re not authoritative, they’re opinions of people who are, likely as not, angry for their own particular reasons.
Instead concentrate on the good that is within the Catholic faith. For practical expressions of it watch and listen to Pope Francis, who is, in my opinion, the best thing to happen to the Church since the Reformation. He speaks out for the poor, the marginalised, the needy, the sick, the imprisoned, the persecuted. Would he be a member of a Church that didn’t serve the children of God?