Overall, as versions, I believe Jewel Smith would see all former versions to the King James, as inspired.
Many KJV-only advocates do not seem to be very well-informed about the pre-1611 English Bibles of which the KJV is a revision.
The 1539 Great Bible, one of those former versions to the KJV, may not be overall purer in all its renderings than the 1537 Matthew’s Bible. Sometimes the next Bible in the line made some changes by adding words likely from the Latin Vulgate as in the case of the Great Bible.
In several likely additions from the Latin Vulgate including three whole verses in Psalm 14 (between verses 4 and 5), an edition of the Great Bible in 1540 has over one hundred eighty words in the book of Psalms that are not found in the KJV (check and compare Ps. 13:6, 14:1, 17:9, 18:6, 19:14, 20:9, 29:1, 33:10, 38:16, 48:4, 55:23, 65:1, 73:13, 73:28, 85:8, 92:13, 95:7, 108:1, 111:10, 115:9, 118:2, 120:7, 132:4, 134:2, 136:26, 147:8, 148:5). An edition of the Great Bible has over one hundred fifty words in the book of Proverbs that are not found in the KJV (check and compare Prov. 4:27, 6:12, 12:11, 13:13, 15:5, 15:27, 16:6, 18:22). Because of possible additions from the Latin Vulgate, an edition of the Great Bible also has over one hundred words in one New Testament book (Acts) which are not found in the KJV (check and compare Acts 4:25, 4:27, 5:15, 13:30, 14:7, 15:34c, 15:41c, 18:4, 23:24c, 24:17). These textual differences (pertinent facts), involving over 400 words, that are omitted or removed in the KJV, were found in a reprint of one of the 1540 editions of a Great Bible so they may not be in every one of the varying editions of the Great Bible. Thus, the Great Bible, the first authorized Bible in English, would likely have hundreds of more words than the 1611 KJV.
Were these significant non-majority textual differences in the Great Bible (likely most from the Latin Vulgate) changes towards more purity or changes for the worse? Was someone involved with the English Bibles on the KJV-only view’s good line adding to or subtracting from the word of God? If the Latin manuscripts have signification in determining the text of Scripture as Edward Hills and David Cloud asserted, why would these readings based on the Latin be removed or omitted in the KJV?
Do you suggest that the 1611 KJV removed or omitted over 400 inspired words found in the 1540 edition of the Great Bible?