If a German wants to discredit the statements made by another person, he can say (among other things): Das ist von Ihnen zu kurz gedacht! – literally that was “thought too short”, meaning that was not (fully) thought through.
That kind of criticism is damaging even if it is not backed up by specific points. For it accuses the other party of not having considered all possible factors in a given situation, in a decision made, in an action taken. The person criticized did not adequately analyze the situation, did not take a systematisch approach.
That certain (unimportant) factors should be ignored is not relevant to the critique. The criticism sticks: the other person didn’t consider the connections and interdependencies.