My take is that the USD will collapse only under one of two circumstances:
1. The US empire decides to do a rug pull -> suddenly and for no apparent reason, "end the fed" proposals start getting traction.
2. The last nuclear weapon has been detonated, in which case you probably don't care that much about currency markets.

The people in picrelated are talking nonsense, but they're talking their book. However, I would caution the "USD will last until the end of time" people that #1 is not impossible.