Wouldn't a 'real' Catholic believe that
That's just because these guys are nuts. They're against euthanasia and abortion, BUT in favour of capital punishment ("for the protection of the moral order"). Fking authoritarians.
Of course death penalty has existed for long time, and was accepted by the primitive Church. But if they go that way, then they should also accept abortion, which was at the time allowed until 40 days (until the soul enters the body of the unborn baby).
"No member of the faithful must be allowed with impunity to express public dissent from Catholic dogma." Of course, no dissent from *their* Catholic dogma. But *their* dogma isn't what the current Catholic Church is saying, and therefore *they* are the dissidents.
Also totally inconsistently cherry picking what they like and don't with each Pope. E.g. they criticize Pius X ("revision of the psalter of the Roman breviary"), criticize Paul VI (Lithurgy. 4 mass in latin), then praise the Pius X ("Anti-modernist Oath"), then praise Paul VI (Doctrine 24. Marriage). They praise John Paul II, but criticize "Popes in recent times". An incredible level of arrogance.
"the Catechism of the Catholic Church made in 2018 should be corrected." They literally believe they're more Catholic than the Pope.
the Pope is God's representative on Earth? So, if he was trying to find common bonds with other faiths, isn't that God's will manifest on Earth?
I think God's representative Jesus (supposedly, right). The Pope is the successor of Apostle Peter, who founded a Church in Rome, and to which Jesus gave the keys to the kingdom of heaven "whatever you bind on earth will be bound in heaven, and whatever you loose on earth will be loosed in heaven." (Matthew 16:19). (I can't believe I just quoted the Bible. Fortunately on the internet nobody knows I'm a dog.) So the Popes, who inherited from Peter, get to decide what's a sin and what's not. If Pope said it's ok for Catholics to go to religious service with non-Catholic Christians, then it's ok right up to heaven (where Peter awaits at the pearly gates). [don't take me too literally]
I'm not sure if the correct wording would be "boundaries of faith", I think more important is the message that what matters is the core belief (e.g. the divinity of Jesus). The Churches founded in Ethiopia, Armenia, India, each by a different person (Matthew, Thaddeus, Thomas, respectively), parted ways 17 centuries ago, yet have always been considered as legitimate as the one founded in Rome (by Peter). It would makes little sense to consider accept the Oriental churches as ok but paint the Lutherans and Catholics as irreconcilable, while they share 12 more centuries of common doctrinal evolution as compared to the Oriental churches.