No argument
Dave, it's all in how you define the gun. If the grip safety is, in your opinion, a defining element of a 1911, than so be it.
On the other hand, since I collect .45's, I can trace the development of the swinging link, dropping barrel system from the M1909 (which used two links, fore and aft). The grip safety was an add on at the demand of the cavalry, and not part of JMB's original design. But it was required for adoption in 1911.
And the history of the Argentine .45's (Colt M1927, HAFDASA, and Ballista Molina) shows the later guns are lineal descendants of the 1911/1927
Perhaps the temperature down in Mesa is starting to affect you? Come on up to the mountains, where 90 degrees is very hot!