alt Hacker NewsThere’s been plenty of coverage of this issue, and this article discusses some of the changed they made: https://www.space.com/space-exploration/artemis/the-artemis-...
The only thing the author of this blog piece has to offer that’s new is his very strong personal intuition that the new design hasn’t been properly validated, without any engineering explanation about why the testing the performed won’t adequately simulate real world performance.
Their testing procedures failed to predict the char loss before the flight, so they don't seem very reliable.