Yes, it is. It could have been long ago when there could be a presumption of an error made in good faith, but that is no longer the case.
Valerie appears to think that the cherry picking is ethical.
Given his lack of response to those who have pointed out the massive flaws, “claims” is far more appropriate than “reasons.”
Correct. Since that has been pointed out to him and he does not engage with it on any professional or even semi-professional level, it’s plain ol’ cherry picking.
And he has been made aware of that and the paper has not been corrected, so there is no reason to presume that his false claim was made in good faith.