Enough to say "Yeah, but everyone else did it, and it wasn't that many, so..."

...and here we are.

The entire thing seems fishy, sure, but playing devil's advocate, you'd wonder if they wouldn't screen out all the confidential emails. Of course, Comey did say even with the filtering, he did not see intentional obfuscation.

The only thing in question now is how the public will view this, and I'm pretty sure the only people who will be convinced are Hillary supporters.

Therein lies the fault. An investigation by the FBI is not a courtroom, so "legal principles" aren't their job, but determining whether they could move forward with a prosecution or not is. I suppose the two are not linearly independent, but IANAL so I don't know enough to make a judgement on it.

It's hard really to tell from here whether this means Clinton is above the law or not, but I can definitely say this gives the appearance of it. Moreover, Trump won't give a shit what the FBI uses, he'll use it against her anyway and big portion of the American public, Trump supporters and non-supporters (ie., disaffected Bernie supporters) will agree with him on this anyway.