You mean like fundamentalist Protestants who say (a) only Christians can be saved, and (b) Catholics aren't Christians, Orthodox aren't Christians, most other professing Christians aren't really Christians, and (c) the only real Christians are people in their little group, and a few like it? Like them?
Pot, kettle, black. Pretty amusing to condemn another group for its falsely alleged "exclusivity". Do you not see the blatant irony?
Acts 4:12 Neither is there salvation in any other: for there is none other name under heaven given among men, whereby we must be saved.<<
At least we have the word of God to support us. No RCC or some other hierarchical organization to which we look for salvation.