It’s no surprise here that John Oliver just parroted what he was told to say. The bulk of the segment was written by Molly White, who is very open about her bias against Bitcoin/Crypto.
Discussion
It’s hard to blame people who aren’t involved in bitcoin to see it all as one thing. Crypto con artists have raised untold sums of cash from VCs and uninformed speculators to confuse everyone, shill their worthless fraud tokens, and disparage bitcoin in the process, because there’s no one except us to call bullshit on them.