Why should Stone or anyone accrue legal costs for this - remember the entire legal process is itself part of the punishment regime and a form of financial torture - if you want to think about it that way.
“Why should Stone or anyone accrue legal costs for this[?]”
Under the Sixth Amendment, he does have the right to have an attorney appointed and paid for by the government.
As is the case a thousand times a day when a plantiff charges a defendant who is not guilty of anything. The defendant still has to defend, pay attorney fees.