The other way to put it is that anyone who questions that "We believe" thing is not a "good Catholic". The organization dictates an all-or-nothing acceptance of what it teaches. "Good Catholics" reconcile the fact that "the Church" has at times changed its mind or done bad things with the explanation I gave: Those were cases of human fallibility, not an indictment of "the Church".
When "the Church" does something good, it's evidence of God's will working through true believers. When "the Church" does something bad, it's cases of imperfect humans refusing to follow God's will. When "the Church" decides that something that was true before is no longer true, or vice-versa, it's evidence that the previous "truth" was based on imperfect understanding of God's revealed wisdom.
In all of that, feel free to replace "good" with "things I agree with" and "bad" with "things I disagree with" to get the practical reality of how most Catholics live. People don't generally do things they don't want to, nor refrain from from things they do want, just because the Church tells them to. See divorce, premarital sex, and birth control for the easy examples.