The author of the article,Francois Teyssier is the resident expert amateur on CV spectroscopy in the ARAS group. He publishes a nominally monthly newsletter on the group’s activities in this area.
There have been a number of nova confirmations by amateurs recently and followup up spectra tracking the evolution of some targets. We have been getting a lot of support interpreting the data from professional Steve Shore.
I expect the FLOYDS spectrum should settle the matter. It is a rather strange low resolution 2 order echelle instrument though which needs a very specific data reduction pipeline. (looking at the spectrum image, subtracting the sky background should be an interesting challenge !)