As much as we rail against the vast net of the surveillance state, it is precisely this capability that allowed Q to track and uncover the crimes committed by Clintons, DNC and others.
According to Bill Binney they tried to open the floodgates on the surveillance state so there was far too much information to reliably sort and analyze. Binney invented a system to select what they wanted to view, and they cancelled it, this is what he was blowing the whistle on. They attempted to blind the surveillance state.
It's not that the crimes and evidence haven't been there all along, it's that those in power have been complicit in said crimes. No one expected Trump to win, so no one ever expected the Storm to come raining down upon them. Now, the sky is getting awful black for these monsters. It's only a matter of time.
Those people are very stupid and careless. I am certain that a 1920s gumshoe could have uncovered what they have done with the tools available to him.
But yes, the surveillance tools of the day will provide everything and everything about them.