I accept your point about why it matters who runs the site. I would just argue that in this case, it’s not as relevant because the goal seems to legitimately be information transparency, which is consistently delivered across its work. Its findings are at least generally reproducible. But no it’s not scientific. I believe I’ve stated that already, however it’s a good indication of reliability of a source.
Yes, human bias creeps in, hence my point of using it alongside general media literacy and critical thinking when evaluating media.
It aggregates and analyzes a ton of sources, and gives generally accurate information about how they are funded, where they are based, and how well the cite original sources. These are all things that can be corroborated by a somewhat systematic reading of the sources themselves.