Oops so 70 odd people. That’s still nowhere near reasonable to make the claims they’re making.

Being hard to get a decent sample size isn’t a justification for making unreasonable claims.

A few people have commented on the nature of the samples group (namely that they were homogenous, etc), but that’s not mentioned in the article, and the paper is behind a paywall. If you want a press release for your paper you need to make sure the relevant data is available to people who otherwise only have access to the article.