This article is saying scammers are an obstacle for mass adoption... There are scammers with fiat. scammers are not an obstacle for mass adoption. If anything, scammers are contributing to mass adoption. People seeing how far others will go for something of this value, will find ways to work with it without scamming others.
https://www.newsbtc.com/2019/05/17/crypto-has-one-major-obstacle-in-mass-adoption-can-it-be-solved/