> Wouldn't that only matter if the bug has no affect on little endian?
I don't know whether this logic applies to this specific sort of bug, but there is a long history of bugs that "don't matter" combining with other bugs to become something that matters. Therac-25 was a bug that didn't matter on the hardware it was developed for, but then the software that "worked fine" got repurposed for another hardware platform and people died. If there's an easy way to identify an entire class of bugs it seems like a good idea to do it.
I don't know whether this logic applies to this specific sort of bug, but there is a long history of bugs that "don't matter" combining with other bugs to become something that matters. Therac-25 was a bug that didn't matter on the hardware it was developed for, but then the software that "worked fine" got repurposed for another hardware platform and people died. If there's an easy way to identify an entire class of bugs it seems like a good idea to do it.