how about other Stablecoin, tether are audited by regulator and managed by big company, i don't think you're argue is valid
Some people may not believe it again after tether has stated if they were not fully backed by the dollars. I know even some people were accusing this has a backdoor to frozen the user's amount.
This is more than a year i have been using tether and so far i never encounter any problem even i leave it on my cold wallet.