No, but I don’t believe I saw the issue until the 6.13.x kernels either

What kernel version? I had similar issues on similar hardware. These have gone away in more recent kernels though.

I used to use Plex, then one day my internet was down and since Plex couldn’t phone home, it wouldn’t let me log in to watch media ON MY LAN.

So yeah it’s inherently broken. That’s before you even consider the licensing.