I look at it like x86 / x64 processors.

There are always hardware errata. But they're patched and papered over with firmware.

Essentially, I'm operating a system, and if you can guarantee the system functions as documented -- I don't really care how the sausage gets made.

What I would care about is if a pilot (in this metaphor, my compiler, I guess?) doesn't feel comfortable operating the system.

And I think the pilots' unions have been interesting in this. Because they don't really want to slag their employers (the airlines), but they're willing to push back hard on Boeing for essentially the same issue.

A lack of transparency about and sufficient training in differences.