My hypothesis is that this is a psychological thing with him (and most of them quite frankly).
Yes it is, but their psychobabble is unfortunately sustained by the ever increasing silliness of revisions of such as the NIV, and the cultic appeal of books such as "New Age Bible Versions." I can't see either fading in the short term. I wonder if Avery is a contributor to this book?
The KJV is a good translation in some respects, but certainly not worth idolizing due to its failings. One failing is to leave the Aramaic word "Maranatha" in 1 Cor 16:22 untranslated, which is a fence sitting exercise. Notwithstanding, G.A. Riplinger targets any bible version which imputes a future tense to 1 Cor 16:22, starting from Thomas Aquinas (“Dominus veniet" - “the Lord will come”) as a New Ager (first time I heard Aquinas imputed as a New Ager). I found this allegation quite interesting.
The very latest and exhaustive research by Andrew Messmer in Journal of Biblical Literature, Volume 139, Number 2, 2020, pp. 361-383 comes down in favour of the past tense "מרנא אתה (or מ רָָנאָ אתֲאָ using C. L. W. Grimm’s slightly modified reconstruction in Clavis Novi Testamenti philologica (Leipzig: Libraria Arnoldiana, 1868), and so the most probable translation something along the lines of “our Lord came” or “our Lord has come,”" which is in tune with Jerome and John Chrysostom. So may be we have to grant a few concessions to the KJVOs.
Why is it that all these people who use the right Bible do all the wrong things? Aren't they the more holy of the bunch or at least SHOULD be?
The Anglican / Episcopal church, which used the KJV during the reigns of Charles I and Charles II and subsequently, did many wrong things, such as persecuting presbyterians etc. And so have many other KJVOs done many wrong things. Perhaps it's because they tend to idolize the KJV, rather than read it. Peter J Williams, principal of Tyndale House, Cambridge University responded in one of his lectures to the question "which bible version should I read," by saying, "the version which leads you to read it the most."
May be the KJVOs should take heed.