The part where he says...
The privatized DIY American model is hopelessly inadequate and defective.
...he is just being nasty. Like some of my Catholic friends, he thinks that the cause of all the problems in the world is the Protestant reformation which itself was inspired by Satan. He lumps all non-Catholic Christians together as "Protestants" and gives us the code name "the privatized DIY American model". I bet Romulus would say that Obama and I are the same religion because neither of us are Catholics yet we both claim to be Christians.
I am pretty well versed in Catholic bigotry toward Christians. I have seen quite a bit.
The changes you mention in the Protestant church denominations are why I attend an Evangelical church. We are not part of any top down hierarchy. We are however affiliated with several other Evangelical churches which teach a similar Bible based message. If my church were to change and start preaching an extra-biblical message (such as the elevation and worship of mortal men), I would simply leave and find another church which teaches the word of God.
I've seen the bigotry go both ways; my cousins and I agreed not to exercise it in adulthood, after growing up with Republican Protestants vs. Democrat Catholics at every family holiday table. We've done pretty well with that. Particular points of Protestant disgust were from the dry protties who thought priests drinking was an outrage, the whole idea of confession to an earthly human being, suspicion that veneration of saints is the same as worshipping saints, and the splendor of Catholic churches when the community is poor. Naturally, Catholics have quite a few well-founded concerns about the heterodoxy and apostasy among non-Catholic Christians, and the downplaying of important education such as the absence of consistent dogman or catechism in many of the prottie/evangelical sects.
I, myself, think that the total freedom of choice and of doctrine in American Christianity has as many downsides as the problems of bureaucracy and periods of corruption in the Catholic church. I'd really like to see a concerted effort of Bible-believing groups to band together at this present time of great challenge. Sadly, the old-line National Council of Churches, World Council of Churches and even the International Red Cross have taken left turns.