It's not that their technology isn't cutting edge or valid. They simply aren't accountable to the same rigor that NASA imposes in the US. They're playing by different rules and there's no mutual recourse for misconduct or malice. National pride and reputation is all well and good, but the ISS mission deserves better.
"Oops, we killed the ISS, guess we'll do better next time" isn't something that should be so frequent a possibility.