These findings seems pretty restricted to Craiglist terms which are their own field of SEO spam. Craiglist was used by SEO spammers who created tonnes of spamm

These findings seems pretty restricted to Craiglist terms which are their own field of SEO spam. Craiglist was used by SEO spammers who created tonnes of spammy ads and links in those ads to feed off Craiglist's former positive SEO. Google stopped indexing Craiglist ads which pretty much destroyed the site organically. This left a vacuum on Google though for sites to run longtail keywords with 'Craiglist' in them because users were still trying to find Craiglist ads on Google. So there are tonnes of spammy zombie sites with Craiglist terms on them. SGE is picking these up, just as regular Google can and does for these terms. Not saying it's not a problem for SGE, it's just also a broader problem for Google that they haven't solved perfectly yet. It's not the AI brain behind SGE doing anything wrong.