Just from reading the abstract, it feels like the authors didn't even attempt at trying to be objective. It hard to take what they're saying seriously when the language is so loaded and full of judgments. The kind of language you'd expect in an Op-Ed and not a research paper
It's an essay. Being opinionated is a feature.
I think you may be confused. This is not a research paper, it's an op-ed in a law journal.
SSRN is where most draft law review/journal articles are published, which may be the source of confusion.
For most other fields, it is a source of draft/published science papers, but for law, it's pretty much any kind of article that is going to show up in a law review/journal.