As one of the issues in the GitHub repository suggest, it seems all that is needed for a book to be considered “mind expanding” here is for it to have a Goodreads and/or Amazon rating higher than 4.
But what does that prove? There are people who rate Netflix’s Red Notice 10/10. Relative to those people, I think I’ve seen more intelligent forms of life swimming in the milk in my breakfast cereal.
I read half of The Compound Effect — one of the books in this list. It was trash. I’ve also read Sapiens from this list, and I certainly would characterise it as mind expanding.
Even from these two titles alone, I’d say the quality in the selection is far too variable. I think reviews are near enough useless unless you’re intimately familiar with the reviewer, and trying to curate the works in a collection like this by writing unit tests is probably futile.