You know, I almost answered Buckhead that way, but then I realized I was responding less to his specific question, than to where I sensed he seemed to be heading with his query (a short lifetime universe).
While it is true that the current state of science regarding the red shift is that it is due to Doppler shift, nonetheless, one would be taking an imprudent step to translate that "understanding" to a non-scientific limit of "proven and irrefutable".
Since the phenomenon described in the thread article is so new and there is so little understanding of how it would be created in nature, or how an existing "normal" light beam could be "twisted" or how twisted light could be detected, distinguished and observed, it might be more prudent to be a bit more circumspect in regards to such answers.
For instance, in #13 above, I present one possible scenario with "twisted" light that could account for an apparent lowering of its frequency like occurs with red shift. Could this account for the observed astronomical red shift? It's possible, but while I don't think so, I also believe that it is still too early just to give a blanket "No" to the question.
--Boot