I think you must be right. When I was in seminary and afterwards as a cleric, no one ever mentioned, as far as memory serves, the sentence from 2 Corinthians. Rather, we were just to share in the one priesthood of Christ. In those ancient times, no one mentioned gender--until that nonsense about physically resembling Jesus' maleness, which does make having a penis a requirement for ordination. I attend an Episcopal church now with many gendered priests. Yet sometimes I would like a pope who is a little infallible, since some Episcopal churches can change essentials too easily. BTW, Buddhists teach that their doctrine, even considered to be  a rather mobile skillful means, is indefectibe, i.e., cannot be overturned. We do long for some certitude, but that is better realized when the entire church functions in the presence of Christ. Which I take to mean acting in awareness of the indwelling Spirit of Christ.