There are different methods or ways to identify or detects Scammers on crypto currencies. But all the ways that have mentioned by the OP from the link

https://medium.com/@Peter_UXer/how-to-identify-cryptocurrency-scams-813c32816ddf?source=friends_link&sk=da150ce8128c348da4b0dfdbf57e8e12 

have been tried by people to avoid Scamming yet, people still fall every day and night. So best way to detect it is wisdom and knowledge.

Scammers are bringing new methods to defraud the unexperience users, Traders and investors in the social media and Internet (sites). Therefore, wisdom and knowledge is needed to identify the tricks the fraudsters will use to scam. Another way to identify crypto currency Scammers is the IP address. Before you sign up to the site, check the website ip and ask people that know ip address very well  before you sign up.
I also want to recommend that since the Scammers have developed their skills to defraud people, the anti-scammers programmers should also advance in their programming knowledge to create a program to detect fake sites.