Found it:
Node, The 9/11 Post comment page 100,
Node, December 4, 2016 at 13:12:
– KOWN : “Node, do you know what changes to building regulations they have introduced, in the wake of Building 7” ….
– Not aware of any changes in building laws, but they’ve introduced substantial changes to Newton’s laws in response to the collapse.
So, WTC7 not the Twin Towers, but it was indeed a quip, an aside.