It sounds like you are saying that creating transparency of Clinton lead to her not getting more votes. I fail to see how having transparency is a bad thing.
The WikiLeaks email leaks did not directly involve Hillary. Most involved John Podesta, Debbie Wasserman Schulz and others--you know, the campaign staff. They were unflattering emails about Bernie Sanders, democratic donors, and other issues.
If you are failing to see how having transparency is a bad thing, why oppose an investigation into Trump's campaign staff.
Why does Trump get blamed for this?
For the umpteenth time, because Trump campaign workers had contacts with Russian government officials (and other Russians) and because the FBI, CIA, NSA all concluded that Russia was behind the email leaks and interfered in our election.