The assumption was made and the claim leveled that I am ignorant of the arguments presented against the validity of radiometric dating.
It is either a personal attack or an attempt to establish these arguments as unassailable truth by implying that no one who was aware of them could possibly disagree with them.
The validity of radiometric dating is subject to the assumptions upon which it was developed.
The whole pracess started with an assumed age and expanded out from that position. No attempt was ever made to challenge that assumption.