Actual article headline is, "Showing off your status and wealth makes you seem less co-operative." "Flashy" and "status clothes" are words/phrases that don't even appear in the article.
"status" is mentioned 17 times, including in the headline. "Flashy" being a synonym for "status" clothes is well-known.
> The results showed that participants elected to co-operate with partners whose avatars had unbranded clothing 57% of the time, but when the avatar sported a luxury logo, this figure dropped to 45%.
> A second study, in which participants could first choose the design of their own avatar, found that those who chose branded rather than unbranded clothing themselves were still less likely to choose to co-operate with partners with brand-boasting vs logo-free avatars.