His assertion that GA aircraft have never been used in a terrorist attack
is
flawed logic.

I know many have forgotten or may not know of this, but a GA plane has been
used for unethical purposes.
Shortly after 9/11 a young kid thought he would make his mark on history by
slamming his plane (Cessna 152 I believe) into a building in downtown Tampa.
The plane was totally destroyed and the building only had a broken window or
something that minor.
I leave you with a ABC news web link for you to decide if Charles Bishop
was a domestic terrorist the likes of Timothy McVey.

David