The author provides a single critisism ("The italic is mediocre"), does not elaborate, then immediately hedges their critique.
Helvetica is used as an example of a font which garners more "affection" in contrast to TNR, but is never praised by the author or recommended as an alternative - at least not in the linked passage.
Helvetica is not usually in the running for use by lawyers.
The author also criticizes the narrowness of the font (and particularly of the bold style). They're not trying to argue that Times New Roman is terrible - just that it's substandard.