Very simply, Yes, it is what I think. The Catholic Church is Jesus' Church.
Fortunately, it is possible, and popular, to be Catholic in heart, but not bodily. Such Christians are members of Jesus' Church, however imperfectly united they may be with Catholics who are fully incorporated into His Body. Membership in Jesus' Church, depends upon faith and faith alone. Both Jesus' Church's bishops, and many non-Catholic Christian teachers, agree on this.
Catholicism is a rejection of the "Historical Gospel" of Jesus Christ and justification by faith alone. Christians are justified by faith alone because they are justified by Christ alone. Jesus Christ is the justifier, Romans 3:26. We are justified by the doing and the dying of Jesus Christ, plus nothing.