That's the only thing that BE has over LE. But for example bitmaps in BE are a huge source of bugs, as readers and writers need to agree on the size to use for

That's the only thing that BE has over LE. But for example bitmaps in BE are a huge source of bugs, as readers and writers need to agree on the size to use for memory operations. "SIMD in a word" (e.g. doing strlen or strcmp with 32- or 64-bit memory accesses) might have mostly fallen out of fashion these days, but it's also more efficient in LE.