The same trust/consensus is needed with Crypto. The only thing crypto has over USD is that we can be certain of its issuing policy (but even then a fork could change that).
I trust USD issuing, the federal reserve, and American military for the most part (so does wall St, EU, Japan, and China).
I trust USD issuing, the federal reserve, and American military for the most part (so does wall St, EU, Japan, and China).