https://www.theguardian.com/technology/2021/jun/25/google-starts-warning-users-if-search-results-are-likely-to-be-poor

New message warns that results are ‘changing quickly’ and may not yet include reliable sources

Google has started warning users when they search for a topic that is likely to have poor results, as part of its effort to tackle “data voids” on the search engine.