It is some peoples goal. I think I like the idea of it. Its partially a limitation in time and emotion.
poly-fidelity as far as I have read is usually a grouping ALL locked into themselves. When someone else comes in EVERYONE has to decide it healthy
But IU have seen it more micro managed. Like 3 of the 4 partners are poly-fidelious and the 4th is in the grouping but remains open.
Lots of variations of a theme imo.