Yes. They cited “Unpublished studies from our laboratory” which is nothing. Being charitable, they actually did all the work and then just decided for the hell of it to not publish.

As I said in my post:

Their model is convincing enough: nicotine activates certain signaling pathways which starts a cascade effect causing out of control cell proliferation (aka cancer). But the first domino in that chain is literally “trust me, bro” with no published experimental data.