The flagging history of all the users who flagged that post was very consistent. There was no connection to any specific topic (nor between the accounts, that I could see). Rather, they have previously flagged stories about things like cryptocurrency, ransomware, covid lockdowns, $BigCo flamewars, and lots and lots of scandals involving such subjects as Florida, Katie Hill, and the Chicago Police Department. Also, most if not all were avid HNers, people who comment and upvote and in a few cases email us a lot.

The pattern seems clear that these users are flagging the more sensational kinds of submissions that tend to lead to predictable discussions and flamewars. There's room for competing opinions about which of those are/aren't on-topic for HN, given the site guidelines; if you or anyone want to understand how the mods look at it, I recommend the explanations at the links below. But clearly the flagging behavior in this case was in good faith.

https://hn.algolia.com/?dateRange=all&page=0&prefix=false&so...

https://hn.algolia.com/?dateRange=all&page=0&prefix=false&so...

https://hn.algolia.com/?dateRange=all&page=0&prefix=false&so...

https://hn.algolia.com/?dateRange=all&page=0&prefix=true&sor...

https://hn.algolia.com/?dateRange=all&page=0&prefix=true&sor...