There are certainly two kinds of traditionalists. The last year’s Motu Proprio was a good litmus test: some cheered it and asked for more; others reacted angrily. www.traditio.com, for example, printed a photo of the Pope with devil horns in response.
Also, the author did not compare them to Muslims in terms of opposition to Christianity; he said that when enough of one’s own kind project anger, the entire image suffers, and gave the misfortune of the moderate Muslims having an image problem as an example.