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The origin of the second order phase transition at 328K in Ta$_2$NiSe$_5$, aprominent candidate for direct gap excitonic insulator, remains under ferventdebate. The driving force for the transition can be revealed by identificationof the soft mode's origin that may be deducted from polarization resolved Ramanscattering experiments. Such studies were recently reported in[arXiv:2007.07344 (2020)], [arXiv:2102.07912 (2021)], [arXiv:2007.01723 (2020)]and [arXiv:2007.08212 (2020)]. In this Comment, it is shown that the parametersderived in a recent arXiv by Kwangrae Kim et. al. [arXiv:2007.08212 (2020)],including the Weiss temperature for excitonic transition, are based oninconsistent data.

Comment on "Direct observation of excitonic instability in Ta$_2$NiSe$_5$" [arXiv:2007.08212 (2020)]