This does in-fact address quite a bit, because they have change their stance with this update. Previously even LAN only mode required to go via their bambu connect system, now you can switch it to developer mode and talk freely via MQTT to the printer.
- Want to introduce x, but we are worried what our userbase thinks.
- Introduce something way more ridiculous y that subsumes x.
- Rollback y but not x because of backlash.
Now they look like a company that listens to their users and they got what they wanted.
Don't get me wrong I'm glad they're responding to feedback but the feedback shouldn't have been required in the first place.
I'm all for better security on products(esp ones that heat up to 300C!) but interoperability with open standards makes it a better product overall and given the direction we've seen in the IoT space I think they've done quite a bit of damage(even if not intentionally) by not taking more care in this area.
For LAN mode yes, but for how the printer works — not exactly. Right now you can print from a 3rd party slicer (Orca Slicer) and at the same time use Bambu Handy mobile app to for example monitor the print. LAN mode disables the cloud connection (always has). Which means that with the revised changes you have to choose either a 3rd party slicer _or_ active cloud connection
If you mean that OrcaSlicer will reimplement Bambu Connect protocols inside — I doubt that will happen, since Bambu Connect is not open source, so this would involve reverse engineering the protocols and potentially including Bambu Connect certificates.
Or you can turn off security and use "developer mode", aka. "how things work today" mode, if you want to do things the old / insecure way.
There's also other limitations of it in features I don't really use, for example IIRC the RFID stuff they do with their print spools stops working.
But yes today there is no need to use their cloud services unless you want to control the printer with their phone app. And the printer works totally fine completely isolated from the internet.
The now aborted proposed update would have required using a binary shim from bambu with an embedded 1 year lifetime SSL cert to speak the the printer at all, even when in lan mode.