This sort of thinking is found in most denominational traditions, although it is expressed in different ways. With variations in the detail, I came across it a lot in the particular Pentecostal movement I grew up in - the A/G, who (like Fundamentalist Baptists) had their own “denominational snobbery” in spades.
What twigged me to the problem was as a young man of 19, having a quiet word from my Dad’s assistant pastor about the ‘hype’, as I saw it, which marked the Pentecostal tradition. His own background was Open Brethren; he said that in that particular tradition he had seen far too much of an attitude of “We are the wise and wisdom will die with us” - and that it really concerned him that he now saw a lot of that same attitude in the A/G and other Pentecostal movements.