Correct.
Except you are making an erroneous assumption. This is no different from a presumption of innocnece perspective than law enforcement arresting someone and the DA bringing charges. Though it should be noted this isn’t even actually arresting someone, but simply denying a background check to purchase a firearm, not incarceration, etc.
Just because the state is claiming the person is too great a risk to be allowed to legally purchase a firearm, does not mean the court is obligated to uphold that position unless the state can bring the evidence to back it up. There is nothing to indicate that will stand in the court (re-asserting the charge “i.e. too great a risk”).