There has been firmware issues involving battery life, performance, and charger compatibility. A new beta update was released a couple days ago that seems to rectify a lot issues but this is after 8 months of nothing.
There have been multiple devs working on an oculink port for the expansion bay but FW seems to be one of the roadblocks. Not sure if it's just communication issues or what.
There is an issue with the liquid metal not covering the die and leading to overheating. This has been fixed in newer models or kits to existing customers.
I don't regret my FW16 purchase at all. I just think it needs a bit more polish and a new GPU.
They don't use github, this is just a mirror. So people are just trolling the PRs I guess.