  In the present work, we examine the following points in the context of the
recently proposed curvature coupling helical magnetogenesis scenario
\cite{Bamba:2021wyx} -- (1) whether the model is consistent with the
predictions of perturbative quantum field theory (QFT), and (2) whether the
curvature perturbation induced by the generated electromagnetic (EM) field
during inflation is consistent with the Planck data. Such requirements are well
motivated in order to argue the viability of the magnetogenesis model under
consideration. Actually, the magnetogenesis scenario proposed in
\cite{Bamba:2021wyx} seems to predict sufficient magnetic strength over the
large scales and also leads to the correct baryon asymmetry of the universe for
a suitable range of the model parameter. However in the realm of inflationary
magnetogenesis, these requirements are not enough to argue the viability of the
model, particularly one needs to examine some more important requirements in
this regard. We may recall that the calculations generally used to determine
the magnetic field's power spectrum are based on the perturbative QFT --
therefore it is important to examine whether the predictions of such
perturbative QFT are consistent with the observational bounds of the model
parameter. On other hand, the generated gauge field acts as a source of the
curvature perturbation which needs to be suppressed compared to that of
contributed from the inflaton field in order to be consistent with the Planck
observation. These set our motivation. Interestingly, both the aforementioned
requirements in the context of the curvature coupling helical magnetogenesis
scenario are found to be simultaneously satisfied by that range of the model
parameter which leads to the correct magnetic strength over the large scale
modes.
