No. The answer, dear Father O'Brien, is no.
So if we continue to allow and protect Islam in Western societies with Western birthrates as low as they are, and with Islam growing as fast as it is, we can only be even more assured of the destruction of the Kingship of Christ on earth, and the destruction of the soul, with billions ending up in hell.
You may be asking yourself, "How can someone stray so far from the truth of Catholicism, while still believing that they are Catholic?" The answer is simple: MODERNISM.
What is going on in Father O'Brien's head is Religious Liberty gone wild, mixed with a hefty dose of Freemasonry and the idea of Universal Salvation.
Here's how the error goes:
There is a God, but different people experience Him in different ways. These different experiences amalgamate themselves and manifest in different "faith traditions". Each "faith tradition" is equally valid for each individual, because no two people are exactly the same and people experience one and the same object in different ways. Maybe my red is your blue, and your blue is my red. Since I can't be you, and you can't be me, we can't know if your blue is my red, and my red is your blue. Therefore, differences in religions are nothing to fight about because, ultimately, we're all talking about the same thing. You do your thing, I'll do my thing, and neither of our things are better than the other; so I'll respect you and you'll respect me, and live happily ever after.
For Father O'Brien and his ilk, it is not absurd to believe that there are about as many "faiths" as there are genders (hint: we're talking more than 2 here). This, of course, is preposterous and completely against the Catholic religion, which is the true religion of God, and the only religion whose mysteries are truly unfathomable by man. This is so because they weren't created by man, which means we must have supernatural faith to believe what our finite minds cannot fully grasp: One God, Three Persons. Father. Son. Holy Ghost.
We do not get to choose what is true, and what is not. We do not get to define reality. We cannot pick and choose what to believe and what to reject, and it is certainly impossible to claim that man has the liberty to choose his own religion, according to his own personal inclinations.
As a matter of fact, this whole concept has already been condemned for quite some time. Take, for example, this erroneous statement, condemned by Pope Leo XIII:
[The State] is bound to grant equal right to every creed, so that the public order may not be disturbed by any particular form of religious belief. And it is a part of this theory that all questions that concern religion are to be referred to private judgement; that everyone is to be free to follow whatever religion he prefers..." - [Immortale Dei]
Or this one, from Gregory XVI:
"We now come to another and most fruitful cause of the evils which at present afflict the Church and which We so bitterly deplore; We mean indifferentism, or that fatal opinion everywhere diffused by the craft of the wicked, that men can by the profession of any faith obtain the eternal salvation of their souls, provided their life conforms to justice and probity...
"From this poisoned source of indifferentism flows that false and absurd or rather extravagant, maxim that liberty of conscience should be established and guaranteed to each man" - [Mirari Vos]
Or yet another condemned statement, this one denounced by Blessed Pius IX:
"... the liberty of conscience and of worship is the peculiar (or inalienable) right of every man."
"[This right] must be proclaimed and guaranteed by law in every properly constituted society." - [Quanta Cura]
Father O'Brien, dean of a theological school, is so rife with Modernism, Liberalism and error, I'm surprised he can tell the difference between his shirt and his pants. And to make matters worse, he isn't even calling just for the liberty to choose your own religion. He is asking us to actively defend, protect and help propagate what we know to be a false religion, concocted by a man named Mohammed, whose "god" is the devil.
If you've made it this far into the article, without getting triggered, or succumbing to ADHD and clicking over to another site, I must ask you to pray for this poor priest, Father Kevin O'Brien. And when you're done with that, arm yourself with the truth about the false notion of Religious Liberty.