Two small points-

1. he brought the classified docs case earlier and that case has been dismissed pending appeal, so I don’t think the timing matters there.
2. due to the Supreme Court’s interference, we are probably still a year from a verdict. They were going to help him avoid accountability no matter when the charges were brought.

I agree this is of questionable veracity, but could you imagine if for example fb users had trouble following Trump? There would be a whole news cycle culminating in a congressional hearing. When people talk about the asymmetrical standards that conservatives are held to vs liberals in the media this is a prime example.