Of course that is reason to freeze the account, much like you would seize a gun from a gun owner who is suspected to have committed a crime with that gun.

It's more like seizing every other gun they own too. But also the average person needs their guns to get groceries and pay the electric bill. And they need guns to get a lawyer...

We also throw people in jail before trial which can make it quite difficult to pay the electric bill.

Yes, multiple things are bad.

We shouldn't do that for people that aren't much of a flight risk.

As a matter of procedure, people are detained while determining if they are a flight risk.

Many frozen accounts may similarly be unfrozen before trial, but determining if that’s reasonable takes time.