I read a quote from McCabe that described it as sloppiness. Well, sloppiness should not be quite so targeted, right? Only sloppy when investigating Trump, but not sloppy when investigating HRC? It was the same people!
Just like their side doesn't need anyone to tell them what 2+2 is when it comes to the impeachment, it doesn't take a genius to see that these "errors" are not just errors. All it takes is the exchange between Page and Strzok talking about not letting Trump get elected... the insurance plan they had, to realize, these were not just errors.