This is part of it. Previously governments felt the need to hide skullduggery, but the Trump admin doesn't even bother to pay lip service to this, so to the public revelationa about whatever the Obama admin was up top don't really register. And the political polarization where the mere word "Obama" gets half the population for thing at the mouth doesn't help.

All that said, it doesn't explain the total radio silence we've seen for years now.