Possibly because the notion of America having "abandoned the secret ballot" is hyperbolic at best. Also looks like the article was originally published here: https://amgreatness.com/2022/01/14/what-americans-lost-when-...
Actually there's editor's note in the end linking to the original RealClearPolitics article. Also the article I submitted says that it was first there, but less visibly and without link.
There seems to be no way to change the url in retrospect.
So, no, this should not have been flagged!