Yes, the the old text was accepted for hundreds of years - we have done some reading since then, thankfully.
But, it is not just Westcott and Hort, it is also the text produced by N/A and UBS. But, this won't matter to you, I'm sure, if you've decided scholarship peaked 500 years ago and has been declining ever since. Not much that I can say.
Curious, isn't it, that no ante-nicene father, that no writings during the Arian controversy, reference this text at all? Might be an important scripture for Athanasius to point out, no? Also curious, that no early versions render it this way and not a single early manuscript. Strange how it only pops up in the late fourth century. Even more strange that such as Wallance, Robertson, modern trinitarian translations such as NIV, NAB, ESV, TEV, and dozens more reject theos as genuine.... doesn't matter?
Thank-you for your research, it shows pretty clearly that you choose the KJV because it fits your bias, not because you have concluded it is the most faithful witness.
Conclusion > Evidence - backwards, friend, backwards - Evidence > Conclusion