Brett, you failed to include other reasons for contributor anonymity from the last discusdion on the topic,  including:

1) UNKOWN SOURCES OF DISCRIMINATION

"In addition to being adversely affected at some work settings, employers and school admissions offices increasingly screen applicant’s social media content. It’s easy to advocate for transparency if you are retired or your career and workplace are tolerant of diverse opinions and free speech. If not, you better avoid using your name.

"Personally, I want to hear the views of folks in such circumstances, and they are often eager to have a safe space, somewhere, to freely express themselves. This is different from whistle blowing, per se, and it certainly isn’t citizen journalism. It’s reader comments and observation on journalism and coverage of local issues."