Even if you could filter the noise; there's still a non-zero chance it won't get prioritized. I imagine in Apple's case you could have very real bug reports that only affect 500,000 people and they can't allocate time to fix this. I think there's a tendency to anthropomorphize companies (and OSS projects) as an all knowing person who can fix every problem and has infinite time. In reality there might be 10 people (or in OSS, just 1 person) in the company uniquely capable of triaging your issue in under an hour. The rest would be just as lost as you would be in a new code base and they have to weigh fixing your bug report vs the other opportunities they have (and I'm sure at Apple, closing Radar tickets wont get you promoted).
At least in OSS you can dive in yourself.
Can't reproduce it? Well... you can of course still report it but "I'm not an idiot" is a pretty weak signal. Everyone gets lost in the weeds, and debugging a problem only for it to be an issue in some unstated part of the project is very exhausting.
What is the point of me providing an example case if the ones that know the internals of their code don't try to reproduce my bug?
Yeah, I know OSS devs do not have time/are unpaid. My point is however complete your bug report is, nothing guarantees it won't go stale without anyone having taken a real look at it. In my experience 90% of bug reports, on OSS or commercial products, die this way.