While people can have different experiences. I did have a L/R drift issue on an older Mac (PPC days) - Do you know what I did to have it resolved? I didn't write a twitter post, I contacted apple support.

When the support person couldn't address it they assigned an engineer who worked with me to identify the issue - the bug was patched in the next x.x.1

That's literally all it takes. I've gone down this route 3 times now in various products of their, so I know it's not some off chance to be assigned an engineer.

It beggars belief that people think complaining to the wind will get the problem resolved, when all they need to do is contact the manufacturer.