Mike, your point would work if Sacred Tradition and the traditions of men were one and the same thing. Plainly they are not, else why would St Paul refer to 'Traditions' with approval? (I Cor 11:2; II Thess 2:15)
I think you're rather confused here. Where do you get the date 1565 from? Although there was growing practice of clerical celibacy in the Church from about the 4th century onwards (following, inter alia, St Paul's recommendations in I Cor 7 (esp vv1 & 32-34)), the discipline was not mandated until the 11th century, and then only in the Western Church.
The confusion is yours.
The "tradition" mentioned in Scripture, especially in these verses, refers to nothing less than the very Word of God. Paul taught them the Word of God. That is not tradition but the truths of the Word of God.
That is totally unlike the man-made tradition that is passed on from the RCC/Anglican/Orthodox churches today.