Look at it another way: if they can't even get the launch pad not to catastrophically fail and endanger the facility and all of their permits, why should we trust them to do anything else more complex much better?
True, but Falcon 9 Block V adds the partial reuse capability; while we can say that each Atlas V flew reliably once, we can say that many Falcon 9 first stages have flown reliably several times.
Because the same people previously developed Falcon 9 Block V, the safest and most reliable launcher on record?