Re: Lesser of two evils
His testimony claiming that Clinton's email server had been hacked by others was damning, sure, but he has yet to provide any proof. For that matter he never provided any proof he had access to Clinton's email. Showing a handful of emails sent/received by her doesn't mean anything, because you can get those from the people who sent/received them to/from her. If he actually got into her server he should have tens of thousands of her emails to hundreds of different recipients.
The FBI so far hasn't found any proof of anyone accessing Clinton's email server, despite several months of forensic investigation. Granted, without full network logs from an IDS system some information that could prove or disprove that conclusively won't have been saved. Still, it is hard to give credence to the idea that a taxi driver using social engineering to break into email accounts was able to not only break into Clinton's server but able to see traces of others being there that the FBI missed.
Based on the interviews he's given, he's clearly someone who enjoys the attention so he's got every incentive to make claims he can't back up. If Clinton loses the election then he fades from sight immediately because no one will care about her email server any longer, if he wins I'd expect him to keep popping up and making claims that he somehow will never quite manage to back up.
This guy was guessing passwords and using google to get information to answer security questions. That's great for breaking into someone Hotmail or AOL account, but that's not going to work on a private server nor on a government run server. It is strange that the only account he was able to breach that wasn't vulnerable to social engineering is Hillary's, the one he says he accessed but can't provide any proof of. Or it would be strange, if it wasn't so obvious he was lying.
Not making excuses for Hillary using a private server, that was stupid even if Powell and Rice had done it before her - she knew she was going to run for president and would be attacked for anything even remotely fishy. Using the same email address for personal and work stuff was stupid too. I have a private email server, and have two email addresses. One is for personal stuff, one is for work stuff. For that matter, she's rich, she could have afforded separate servers so there would be no mixing of personal and work emails.