I've personally never went to wikileaks looking at information gathered, but consumed it second hand from journalists reporting on it. As such, I didn't have a problem taking Snowden's leaks seriously yet wasn't eyeballing raw data (nor did the vast majority of people who read about it), so I'll have to disagree.

What you have with the Democrats and the Mueller report is that the "journalist" in this case is the Attorney General who was put into the position by the guy the Mueller report is about. As such, it is a case of not trusting the messenger due to bias so they want to see the actual report.