I don't connect it to the internet, just use the awesome RCU software (paid, but distributed with source code) to move stuff between it and my computer. I presume if I were to try to update it, I'll find the same fate! About exporting, the notebook format is relatively simple, I wrote a very bare-bones software that's able to convert the notebooks to PDF in a few hundred lines of Nim, or you could just use the integrated web UI.
The rm2 is still receiving software updates. The fact that this would have been impossible on more closed tablets, or indeed most mobile phones should show reMarkable in a positive light surely?