The Holy Spirit was never given to vindicate or validate us, as though God was now confirming our doctrinal positions, but to lead us into all truth. All the gifts, all the ministry offices, indeed all that is in the Spirit is intended to guide us (and anyone we deal with) into all truth.
Whether we progress into all truth or not is dependent on our willingness and mindset. It is a dangerous thing to decide we have "arrived" and our position is now all truth. We are far better served to continue throughout our lives to search the scriptures.
I would point out that what we have available to each of us in this day is far superior to what he had available in his day. Rather than judge another man's servant (I have no issues with us decerning right from wrong concerning doctrine and behaviour), the real question is what are we doing with what we have been given?
Joh 16:13 Howbeit when he, the Spirit of truth, is come,
he will guide you into all truth: for he shall not speak of himself; but whatsoever he shall hear, that shall he speak: and he will shew you things to come.