You do not have to add the word "imply" to imply a meaning
You are confusing yourself, you used the word imply, not me.
Let me help you by explaining it very simply:
Yes, any wrongdoing and they should be charged.
'However' is there in the following sentence because, I am suggesting that any such wrongdoing would not have made any substantive difference to the outcome.
'However' is not implying any mitigating circumstance. It may do in your mind, but I cant help with your intellect deficit now can I?