You seem to have pasted the wrong quote. That one doesn't say that his *biggest*...

Mordisquitos on April 12, 2021 | parent | context | favorite | on: Statement of FSF board on election of Richard Stal...

You seem to have pasted the wrong quote. That one doesn't say that his biggest regret is how it harmed his reputation. Rather, it says that he is especially regretful at how it harmed the Free Software Foundation's reputation.