Never had to ignore anyone, regardless of their tenacity, but maybe time to. My guess is the "Covid" thing is working on some different than others and must give them the benefit of the doubt. Let them get the nasty out of their systems.

Anybody that searches "precision" rifles will come up with a list of at least 10 well known manufacturers.
A search of custom rifle builders that do not use reamers with pilots comes back basically empty. I've "ackleyed" a couple of chambers without a pilot but we all know the reamer will follow the original chamber, simple physics. No one should have to prove anything, especially when using subjective terms.