No, this is not the case. If the matter were to proceed to trial on just the barebones indictment as issued, and provided that Trump made a motion to dismiss the indictment which was denied, and that denial was upheld by the appellate courts, then perhaps a 6th Amendment issue would arise.
Until that time, the standard practice is for Trump to file a request for a Bill of Particulars, to supplement the deficiencies in the indictment in terms of factual allegations, and if the indictment, as supplemented by the bill of particulars, is still deficient, to make a motion to dismiss the indictment.
Let's not jump the gun on this one.