I'm also uncertain of what, aside from relevance, makes political/social commentary "cheap" as opposed to "expensive", or why the latter would be more desirable.
Perhaps it's based on a misguided idea that commentary must be tied in scholarship to be worthy of utterance (and that such "expensive" commentary is not just a ritualized and impotent form of social commentary). Or that history moves because of such "expensive" commentary, as opposed because of the "cheap" opinions and actions of puny laymen.
To be honest I skim the article don’t have time to read a whole history book on Ancient Roman law—but I’m definitely interested in Ancient Rome.
But I mean this is hacker news if you want history news go somewhere else.