Sorry to be frank, but that post is gibberish.
One universal church means one body of Christ, one Bride, which includes every believer of all time. Christ wants unity and love, not worldly uniformity. There is one faith that trusts His sacrifice, instead of religious rituals and works.
Look up to Him, NYer. Not down below.
There is no mention of worldly uniformity in Christ's words. Let's look at what He says:
They do not belong to the world any more than I belong to the world.
Consecrate them in the truth. Your word is truth
John 17:16-17
Notice He uses the word "truth", not truths. Truth is in the singular, not the plural. Hence, there can be only ONE Truth, not many. He then goes on to say:
“I pray not only for them, but also for those who will believe in me through their word,
so that they may all be one, as you, Father, are in me and I in you, that they also may be in us, that the world may believe that you sent me.
And I have given them the glory you gave me, so that they may be one, as we are one,
I in them and you in me, that they may be brought to perfection as one, that the world may know that you sent me, and that you loved them even as you loved me.
John 17:20-23