Certainly you can find cases of government overreach if you look hard enough but they aren't common. The USD is backed by faith in the US Government, and it would be financial suicide for the wealthy to destroy that faith by just randomly locking people out of their bank accounts.

Meanwhile people get "locked out" or just lose their crypto far more regularly. Lost passwords, crashed drives, hacked online wallets, rug pulls, crashing values, fake "pegs", misplaced decimals during transactions, etc. 20% if bitcoin is forever inaccessible, and that percent will only go up, never down.

The "you can be locked out of your fiat" cohort are the climate deniers of the financial world "If the earth is warming why was there a record low temperature somewhere yesterday?". "Your fiat isn't safe - just look how those donations to the truckers in Canada were reversed!"