The WCC has pretty much made itself a practitioner of "general" beliefs as the basis for their "faith". Reducing faith to an extent I wonder if it is Christian faith at all.
In this general description they prescribe for Universal appeal to make "peace" the most important aspect of human existence. Seeking to bring religions together by trivializing rather than respecting diversity of opinions and faiths. They have made themselves submissive to the Islamic view. By placing greater emphasis on general themes constant in each belief but nullifying particulars where they diverge, they reject the import of distinguishing our differences which they view as universal and anti-humanistic globalist values and rather than see the import of pluralism and mutual tolerance seek to nominalize Judaism and Christianity into submissive adjuncts of Islam.

Example: Nominal Christians, like many Muslims I meet today, boast that the Jesus of the Koran is the same in the New Testament and that held held by Rabbis. which is at best a farce and not a very clever one. Nothing could be further from the facts. Rabbis hold a good man died on the cross he said a few good things that should be remembered, and he was a Jewish man named Jesus. I respect their opinion, I don;t judge them for it. Christians believe Jesus was the Son of God a heretical opinion and punishable by blasphemy laws under Islam. Jesus according to the NT died on the cross, was buried, rose again, ascended into heaven where he sits at the right hand of G-d and will be there at judgement.
This offends many Jews and Muslims in general. I can understand and tolerate their rejection of my belief. they need not believe what I believe for me to respect their humanity.
The Marginal WCC view is, not to be glib but something like whatever floats your boat. They gloss over the distinctions as unimportant.
The Islamic view is Jesus ascended from the cross and will come back to lead the Armies of Allah.
All these opinions can hardly be reduced to the same thing, the WCC rather than defend diversity has decided to take the Islamic perspective, and reformed Jews seem to fall in line with this view as well?
The marginal Christian questions the relevance of faith, by questioning the Resurrection and the purpose of salvation. They read the NT as little more than an instructive story and suggests that religion "evolves" and the Story of God is progressive and rather than see the fact Islam is not derived from either Judaism or Christianity but depends on the same sort of errant gnostical Christian teaching, has endowed it with a false dialectical power for the sake of "peace" that is anything but.
I often think these people worship peace as if it is a deity unto itself.

I only find them offensive when the claim they are the voice of Christianity.
They are more likely to endorse a Hitler as long as he advocates peace and once taken in they are unable to confess their error.
And less likely to accuse the Islamic State they prefer to call ISIS or ISIL inferring its some sort of Egyptian fertility cult, of practicing Islam a little too radically and literally.
Peace can only be achieved through tolerance of diversity not by rubber stamping theocratic sameness.