God help TEC indeed! I am not surprised by any of this at all. Liberation theology and many other heresies have been the stock and trade of leading "Episcopal" seminaries here in the US. They threw out the baby with the bathwater decades ago by allowing the ordination of women to the priesthood and their subsequent "consecration" as bishops, the gutting of solid biblical doctrine by revisionists in the 1979 prayer book, the "New" (and politically correct) 1982 Hymnal and the "New" translations of Scripture during that period. It is written that judgement will begin with the house of God - I say, bring it on! When Christ returns for His Bride, she will be without spot or wrinkle. That may take a while, but it will happen, as promised. And, what a blessed day that will be. MARANATHA!
Musically, it's of much higher quality, with some really excellent additions from sources such as Greek and Russian chant, Latin polyphony, and the best German chorales (both Catholic and protestant). It did put in some abysmally stupid modern happy-clappy stuff ("Earth and All Stars" is my candidate for the absolutely dumbest and most vacuous words, set to a silly jingle of a tune that for a free bonus is also difficult to sing) but on the other hand it took out most of the worst of the treacly, sentimental Victorian claptrap. So that, for me, is a wash.
From a theological point of view it does leave something to be desired - especially the mutilation of the words of old gospel/New England hymns such as "Amazing Grace" and "Come Thou Fount" - but judicious application of White-out and a good fine point pen can remedy most of that . . . . and the Catholics have nothing to brag about wrt theologically faulty hymns, given the prevalence of OCP and the St. Loooey Jebbys . . .