It's one thing to show things in search results, a very different thing to have a little box saying "We Google have deduced that this is true." They should take more responsibility.
In my opinion they should be required to do something about it. It is very similar to how you can tell google your privacy is invaded by something on Google Maps and they will fix it (with blurring, in that case).
https://eur-lex.europa.eu/legal-content/EN/TXT/HTML/?uri=CEL... See Article 5, Paragraph 1d and 2 and Article 16