I don't trust its specific analysis of sites. Others detail some examples.
I don't think whole-site analysis is very useful in combatting misinformation. The reliability and fullness of facts presented by any single site varies a lot depending on the topic or type of story.
Other than identifying blatant disinformation sites I don't see what useful information it provides. But even that's rare here and rarely needs a bot to spot.
Why is an open-source, de-centralized platform giving free space to a private company?
Giving permission for a private trust-assesing company to be operating in an open public forum makes it look as if these assessments reflect a neutral reality that most or all readers would agree on or want to be aware of. It's a service that people can seek out of they decide they trust it.
Presenting this company's assessment on each or most articles gives them undue authority that is especially inappropriate on the fediverse.