Grand juries are usually formalities with a very low bar. There's a phrase that you can indict a ham sandwich. Not getting a "true bill" is honestly an embarrassment that many prosecutors never see in their entire career.

I could have seen this get blocked here, but there are still many steps ahead, each will get harder to move forward with.

Fun fact: I just wrapped up a case as a juror (not a grand juror) this morning. We rendered a verdict of not guilty because there was plenty of reasonable doubt to be had.