The verse says:
"19And if anyone cancels or takes away from the statements of the book of this prophecy [these [a]predictions relating to Christ's kingdom and its speedy triumph, together with the consolations and admonitions or warnings pertaining to them], God will cancel and take away from him his share in the tree of life and in the city of holiness (purity and hallowedness), which are described and promised in this book."
So. Baptists use this as a capstone to the entire bible, as proof of why the KJV is the perfect version and nobody should ever add to it or change it. Doesn't appear to be quite what the text is saying.
Since much of what is written in Revelations is in a particular style (Jewish Apocalyptic) which makes taking anything in Revelations past the statements to the churches questionable if taken literally, what is John actually saying here? Is this a normal endpoint to a document like this? Is this just John being John? what's the deal?