Yes it is unless you are an idiot and assume the Russians, Super Pacs, Billionaire donors and supporters, and the Campaigns themselves are all as dumb as you are.
We know for fact that Social Media, Polls, Targetting campaigns, and all the things the Russians were doing impact peoples decision making and behavior in elections. That is why they are done.
So if your argument is that the Russians are the only ones who got zero results then you need to make that case.
Your argument seems to be along the lines of 'you cannot prove for certain that TV commercials have ever impacted a persons decision to buy anything' simply because there are often many factors INCLUDING the commercials that ultimately lead to the decision. But claiming tv commercials have 'no influence' is just nonsense and the one saying it is just ignorant and stupid to how things work.