Why can’t Apple fix the Bluetooth problems?

Not particularly helpful. It’s the software on my device, plain and simple, as Apple already acknowledged is a known issue plaguing hundreds of people. My iPhone worked perfectly before the upgrade, and my MacBook continues to work perfectly with the same Bluetooth devices in the same location. Just because the problem doesn’t occur on your device doesn’t mean the issue doesn’t exist.

there are other options between "me having an issue" and "it's a universal issue".

If there is a security flaw that affects so many users that hundreds have actively posted about it, would that also be a non-issue for you? Apple has acknowledged that it's a known issue to me in my customer service chat sessions, stated that they are working on it, and my questions were a) what makes this so hard to fix (a technical question) and b) why is Apple resisting letting me see if a replacement phone corrects this defect? (a customer service/branding quality question). You have addressed neither.

thanks for your response. this is an issue with the iphone, not my bluetooth. I am aware that not all several billion iPhone users have the same problem; we really don't need them all those who do not to attest to that fact.