Unless I missed something, he wrote that the public can associate certain guns with terrorism and that for that reason hunters should not use them.
The reactionaries took that to mean that Jim Zumbo thinks AR-15 hunters are terrorists and should be killed. Or something. Which makes the reactionaries look, well, reactionary.
According to his blog entry, which is
cached on Google, he said:
"I'll go so far as to call them "terrorist" rifles."
and
"We don't need to be lumped into the group of people who terrorize the world with them, which is an obvious concern. I've always been comfortable with the statement that hunters don't use assault rifles."
and
"I say game departments should ban them from the praries and woods."
So, to put it in simple terms, Zumbo calls AR and AK guns terrorist rifles and assault rifles; he doesn't think real hunters use such guns; he doesn't want hunters to be lumped in with terrorists who do use such guns; and hence he wants the guns banned from hunting.
And you think the response was "reactionary" (in a derogatory sense)? No,
most responders did
not take it to mean that Zumbo "thinks AR-15 hunters are terrorists and should be killed". They
did take it to mean that Zumbo was validating the public image of AR-15 owners as being lumped in with terrorists, and that he was promoting government restrictions on the use of their firearms.
Furthermore, they knew that Zumbo's words would be used by anti-gun organizations to try to reinstate the Assault Weapon Ban and pass other gun-control measures.
So if you want to call the response "reactionary", I'd say that the "reaction" was "justified".