Re: Matt Jefferies and NCC-1017
But the Constellation has a NCC-1017 registry number
We don't know that sequencial hull numbers are a standard practice for Starfleet. A small number of the "connies" (in Court Martial) did have hull numbers that were in sequence, but those might have been an exception.
It's easy to support someones beliefs if they are identical to your own.
Tolerating beliefs that you don't personal embrace, or even fully understand, is harder.