It is being argued by some that even if over-all spiritual teachings in the Encyclical are good and poetically expressed, the fact remains that the document will be used by our enemies as proof that even Catholics agree on these issues, to promote abortion, contraception, etc. for their usual agendas.
Now Pope Francis is condemning many things that are wrong in our world which are also condemned by some who are certainly not Catholic believers. Does that mean that he has joined their ranks and we need to go into schism? At the same time he condemns some of them for putting animal rights over the rights of unborn babies.
Or, in the 19th century, there were Communists condemning the exploitation of the poor. They were dangerous enemies of the Church. Many communists were involved in the movement of labor unions. Pope Leo XIII came out behind the union movement as a remedy. Does that mean he was allying the Church with the Communists?