Exactly especially when it's apples and oranges. Storm took that sword to protect all reality including wakanda, tchalla did not put nehzno there to protect storm or to protect mutants or arrako so it's a whole different ball game and whole different reasoning so the argument isn't even making much sense. Now if it's rewritten or added later that he was protecting storm okay, a better argument could be made but one could also say he didn't think she could take care of herself. A lot of reaching.
And the funny part is I remember people ripping into her in this very thread over it.