The link provided is a chapter of a book, not research, and while it refers to research it also draws heavily on personal anecdote. A careful read shows apples-and-oranges comparisons.

A bibliography of the cited research is not included, making it difficult to find the actual research upon which assertions are based and determine whether there was cherry-picking of certain data while ignoring other data, conclusions, or known shortcomings.

The authors do not use neutral language but choose a presentation style which may be intended to persuade but shows a slant or bias. This leaves readers to discuss opinions of opinions.

Anyone have a link to a source document (research paper) to share what informed their view on the topic?