It may be a theoretical truth that the theme of redemption does not belong in the section on creation, but it was certainly not the communal consensus that prevailed in the retention of that verse. One of the outcomes of Falk's groundbreaking work is that the next generation of liturgical composers will borrow from her innovations without compunction. That will increase the impact of Falk's work but also lessen her control over it. Thus we will be depending on a broad and growing group of people to stay within the limits of good aesthetics and ideological propriety. That too is complicated because of the ongoing tension between aesthetic and ideological choices.
Innovation often results in syncretism that goes beyond the pale.
In the long run, however, I do not believe that such things need be greatly feared however painful and divisive they may be in the short-run. Somehow the Jewish people always takes what it needs and sooner or later discards that which does not develop an air of authenticity. In an ever more specialized world, artists and poets often earn their living from their craft. Clearly we do not believe that prayers based on theft have much chance of rising heavenward, and we certainly need our poets and artists and their work. Thus it is critically important that we do what we can to avoid stealing from them.