What is the likely function of “lākinna-hu lā yatahawwar” after describing someone as bold?

Supplementary Practice 4: Audience, Emphasis, Restriction and Rhetorical Judgment

• Tadhyīl because it is necessarily a general maxim
• Ellipsis because the subject is not expressed
• Iḥtirās, if boldness could be misread as recklessness
• Completion of restriction because illā is omitted