.Well Jude 3 for starters, and Revelation officially closed the era of special Revelation.
Does God Still Give Revelation?
"Beloved, when I gave all diligence to write unto you of the common salvation, it was needful for me to write unto you, and exhort you that ye should earnestly contend for the faith which was once delivered unto the saints." Jude 3
I don't see your conclusion clearly expressed in that verse. It might be used along with other things to support your conclusion, but it is not clear enough for me to call it 'proof'.
As for the Book of Revelation you have to be more specific as to where it says it is all done. I haven't seen that.
I went to your link and after reading through a several paragraphs concerned with saying effectively that certain big name preachers and teachers were charlatans, it said no more than you have about there being no more "special" revelations.
After reading about 3 or 4 such men, I quit as it was lengthy with nothing stated to that point but unsupported beliefs or opinions. Those men mentioned in the link may be charlatans or they may be men of God. I don't know, but even if they are that alone doesn't mean God has stopped revealing new things. I have never met those men them or even heard the messages they preach myself. If there were more scriptures with specific information on one side of the issue or the other I had not come to them but was unwilling to spend more time hoping to see it.
Perhaps you have more information or some proof that what you call special revelations ended with the last writing in the Bible. If it is simply your belief, that's OK with me. Without more than that I stand where I do with the Way to more of the truth still open.