"Despite giving Apple 100% reliable steps to reproduce, they asked me if the issue still occurred in the latest beta, and if it does, then I should submit an iOS sysdiagnose." No one looked at your repro steps, and no one researched your bug. They're just looking to cull the bug list. If you don't respond immediately, your radar is closed.
Sometimes I almost believe there are whole sections of the Apple Ring building where the employees are so immersed in IOS that they're unaware MacOS exists.
Gotta pump those metrics for the PMs