I don't know if we're discussing semantics.
A performance score is attributed, and before the fix their scores were all 166. It doesn't work, as you said.
So the consequence is the preferred core being "random", isn't it?
Apparently there's a bug in an AMD's driver. It was supposed to assign processes based on each core's self reported performance, but because of the bug it was random.
This "self reported performance" is based on evaluation done to the cores in the fab process, by AMD. Meaning, due to imperfections some cores are a bit better than others.
My point is, you won't ever try. You'd only use "weak" variables inside the function you're working on.
It's explicit when you absolutely need it to be, when the function is being called and you need to know what arguments to pass and what it'll return