By Luc Olinga The spectacular collapse of Luna and its sister token UST has shaken the credibility of cryptocurrencies and the trust placed in crypto evangelists. In April, Mike Novogratz, the former banker of the prestigious investment bank Goldman Sachs (GS) – Get Goldman Sachs Group, Inc. Report was in Miami for the summit of the crypto sphere dedicated to bitcoin. In this kind of festival, meant to celebrate bitcoin and cryptocurrencies as a whole, Novogratz was a star. The festival-goers were happy to pose for photos with him and did not hesitate to post them on social media. The billiona…