In the John Mueller 09/17/2021 Hangout Q&A, one webmaster was concerned about the impact of the Google MUM algorithm and search results based on multiple sources.
John explained that Google tries to provide a diverse set of options in the search results.
If they can tell that there are very strong or different opinions about a particular topic, it makes sense to provide a diverse set of results that cover different angles for that topic.
This should not apply to most queries.
But it is something they do try to take into account sometimes.
This conversation occurs at the 42:47 mark in the video.