How long will it take our society to realize that democracy is threatened when machines are involved in voting or vote counting? Going back to voting exclusively by ink on paper and hand counting is imperative.
With strong voter ID. Paper ballots do you no good if you can't verify that they were cast by a real person that was eligible to vote in that area, and that they only voted once.
All four voted for Trump, but that's not super relevant. What's relevant is that it was four out of 127,000,000 votes. Even if the problem were 1,000 times worse then we know it still would have had no effect on the election, even if they were all in Wisconsin.