Question is, does it make that much sense to report it to Debian directly? Are you encountering this issue on Debian itself or Armbian/Raspbian/whatever? You reported this to the Raspberry Pi GitHub, so I'd expect them to take this up with the upstream devs themselves, so by the time Trixie is being released, it may already be included.
But besides that, what you describe in the first link sounds to me not like a bug, but as a well thought-through decision. Network adapter names like eth0 have been dropped with Debian 11 (I think, maybe even 10). So don't get your hopes up too high to ever see this coming back. But also, just searching the web for this topic, you should have come across this answering your questions:
https://wiki.debian.org/NetworkInterfaceNames
Richard