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Re:“Moderating HN is like a cross between a postdoc gig and ... by oonerspism on Saturday March 12, 2022 @07:08PM (#30656444)
Figures-of-speech allow for a broad range of comparison. As mentioned already, several key SEAL traits such as:

presence in conflict; mental strength; role as specialists; frontline protection work keeping regular people safe; tenacity and dedication

..are also key traits of vastly disparate things like online moderation.

Figures-of-speech referencing those other qualities are perfectly valid.

Re:“Moderating HN is like a cross between a postdoc gig and ... by l33t2328 on Saturday March 12, 2022 @07:57PM (#30656774)
Comparing the level of these traits present in online moderators to the level of these traits present in SEALs is inexplicable.
Re:“Moderating HN is like a cross between a postdoc gig and ... by oonerspism on Saturday March 12, 2022 @08:08PM (#30656834)
"Comparing the level of these traits present in online moderators to the level of these traits present in SEALs is inexplicable."

As some of the traits noted are binary - either present, or not - the concept of "level" is not applicable.

The commonality of the traits is a valid basis for figure-of-speech.