Here is a retranslation of a passage from the biography of Jamgon Kongtrul (p.86) in which he laments the way in which people in his time viewed and regarded other traditions. The original translation does not quite make sense.
"These days, even among famous lamas and teachers, there are not many who have a pure regard for the teachings of the sage in general, apart from their own traditions and a few scriptures. There are few who have been willing to study with everyone, whether exhalted or lowly, and there is little real knowledge of the dharma. Especially in these later times there are a great many who, while they themselves are not perfectly upright and do not have a spiritual outlook, talk like arrogant bullies about whether a particular teaching tradition is any good or whether a lineage is pure. Never mind other traditions; they are full of qualms and doubts about the basics of their own tradition, like the proverbial one-eyed yak who startles himself."