I do not think protestants are anti-tradition, only cautious knowing that tradition itself must be examined and scrutinized in light of inspired scripture. It is a blunder to make any tradition equal in authority to scripture in our view. And this is what the RCC did.
It is this narrow point that concerns protestants, especially in light of the negative warnings directly from our Lord and savior about tradition. You talk about how tradition was professed by"Church fathers, rulers and councils."
I wouldn’t normally be concerned, but what you mean by Church fathers were actually people who did not know the Lord, nor His apostles and in most cases did not know those who knew them. These, in our view, were people outside the apostolic circle of culture, tradition, and in most cases established doctrine. And in most of RC history, they were people centuries removed from the N.T. scene as valid witnesses.
Yet they insist on playing the role as a "Church father, " implying to naïve people that they are rooted in the divine foundation and equal in authority to any apostle. This, to us, is ludicrous.