I searched the BPT website for Luke Gromen and I don't see his name mentioned before.  I have been following Luke Gromen for years (very savvy guy) and I can say that his ideas on dollar hegemony, US deficits, etc. have long pre dated those of Druckenmiller, Zoltan, Tudor Jones, etc. (the people we have recently seen in the media now making these ideas more popular).  He recently did a RealVision interview (link pasted here) in which he talked about the Net International Investment Position of the USA and how it specifically affects the USA dollar in a way that it has not historically (compared to other fiat currencies) and how the "cleanest dirty shirt" argument NO longer works when looking at the dollar compared to other fiat currencies.  It is at 0:56:28 of the interview.