For that matter the US has boasted of fixing the Russian elections in 1996, overtly committed a coup in Ukraine in 2014, and has attempted to do similar things since the fall of the soviet union for example by supporting evil murderous clowns like Khodorkovsky. So, if Russia took out a few ads or posted from twitter accounts; big deal. And that's assuming Russia (rather than Russian people acting on their own) did something -thus far 100% of the "evidence" for this sort of thing has turned out to be a big nothing burger.
The media obsession with finding a Russian under every bed is absolute insanity; McCarthyism pales in comparison to this hysterical nonsense -communism was a real threat back then. It's also obviously organized: basically the same idiots telling us Putin is behind everything they don't like are the same idiots who sold us on the Syrian war, Iraq and so on. I mean, we have Rob Reiner, aka meathead telling us anyone who doubts the former heads of the CIA is a traitor. This is NUTS.