My take on the article wasn’t ‘Guns banned because VP is speaking’ but ‘Guns banned to make it safer’.
The identity of the speaker is not relevant to the ban - the point (I took) from the article is that the ban is at ideological odds with the NRA’s overall message that the best way to make people safer is that good guys to have guns.
This ban (and similar for other speakers, events, etc) suggest that they tacitly acknowledge that the safest solution is zero guns.
'A song is a beautiful lie', Idlewild, Self Healer.
When you're smiling, the whole world smiles with you.