One exception is George Weigel who levels some harsh criticism at some parts of the document:
Excerpt 1: Weigel sees the encyclical as a "hybrid" rather than a unified whole:
...Now comes Caritas in Veritate (Charity in Truth), Benedict XVI’s long-awaited and much-delayed social encyclical. It seems to be a hybrid, blending the pope’s own insightful thinking on the social order with elements of the Justice and Peace approach to Catholic social doctrine, which imagines that doctrine beginning anew at Populorum Progressio. Indeed, those with advanced degrees in Vaticanology could easily go through the text of Caritas in Veritate, highlighting those passages that are obviously Benedictine with a gold marker and those that reflect current Justice and Peace default positions with a red marker. The net result is, with respect, an encyclical that resembles a duck-billed platypus...
Excerpt 2: Weigel likes some parts of the encyclical:
...The clearly Benedictine passages in Caritas in Veritate follow and develop the line of John Paul II, particularly in the new encyclical’s strong emphasis on the life issues (abortion, euthanasia, embryo-destructive stem-cell research) as social-justice issues — which Benedict cleverly extends to the discussion of environmental questions, suggesting as he does that people who don’t care much about unborn children are unlikely to make serious contributions to a human ecology that takes care of the natural world. The Benedictine sections in Caritas in Veritate are also — and predictably — strong and compelling on the inherent linkage between charity and truth, arguing that care for others untethered from the moral truth about the human person inevitably lapses into mere sentimentality.
The encyclical rightly, if gingerly, suggests that thug-governments in the Third World have more to do with poverty and hunger than a lack of international development aid; recognizes that catastrophically low birth rates are creating serious global economic problems (although this point may not be as well developed as it was in previous essays from Joseph Ratzinger); sharply criticizes international aid programs tied to mandatory contraception and the provision of “reproductive health services” (the U.N. euphemism for abortion-on-demand); and neatly ties religious freedom to economic development. All of this is welcome, and all of it is manifestly Benedict XVI, in continuity with John Paul II and his extension of the line of papal argument inspired by Rerum Novarum in Centesimus Annus, Evangelium Vitae (the 1995 encyclical on the life issues), and Ecclesia in Europa (the 2003 apostolic exhortation on the future of Europe)...
Excerpt 3: Weigel strongly dislikes other parts of the encyclical:
...But then there are those passages to be marked in red — the passages that reflect Justice and Peace ideas and approaches that Benedict evidently believed he had to try and accommodate. Some of these are simply incomprehensible, as when the encyclical states that defeating Third World poverty and underdevelopment requires a “necessary openness, in a world context, to forms of economic activity marked by quotas of gratuitousness and communion.” This may mean something interesting; it may mean something naïve or dumb. But, on its face, it is virtually impossible to know what it means.
The encyclical includes a lengthy discussion of “gift” (hence “gratuitousness”), which, again, might be an interesting attempt to apply to economic activity certain facets of John Paul II’s Christian personalism and the teaching of Vatican II, in Gaudium et Spes 24, on the moral imperative of making our lives the gift to others that life itself is to us. But the language in these sections of Caritas in Veritate is so clotted and muddled as to suggest the possibility that what may be intended as a new conceptual starting point for Catholic social doctrine is, in fact, a confused sentimentality of precisely the sort the encyclical deplores among those who detach charity from truth.
There is also rather more in the encyclical about the redistribution of wealth than about wealth-creation — a sure sign of Justice and Peace default positions at work. And another Justice and Peace favorite — the creation of a “world political authority” to ensure integral human development — is revisited, with no more insight into how such an authority would operate than is typically found in such curial fideism about the inherent superiority of transnational governance. (It is one of the enduring mysteries of the Catholic Church why the Roman Curia places such faith in this fantasy of a “world public authority,” given the Holy See’s experience in battling for life, religious freedom, and elementary decency at the United Nations. But that is how they think at Justice and Peace, where evidence, experience, and the canons of Christian realism sometimes seem of little account.) ...
Full Text of Weigel's article.