I believe the person in question has generated these profiles in good faith and has probably connected many profiles that wouldn't yet be connected without her work.
The profiles she has generated do include sources. These sources are of the style "Victorian Pioneer Index 1836-1888", or "Victorian BD&Ms", we have to remember that it's only very recently (December 2019) that this style of sourcing has come to be considered 'completely vague'. Previously, this type of sourcing was not considered inappropriate.
When adding sources and biographies to these profiles, I've found the data-field information is generally good.
I agree 'untangling' can feel frustrating, but we all make mistakes, and this person's work has been substantial. Would Wikitree really be better off without the work she has put in? I don't think so.