Supernote is the alternative I went with. They have a pretty responsive dev team and the cloud integration is optional, you can push stuff over the local WiFi network.

Unfortunately not! Realistically I'm not big in the e-paper space in general, I bought the remarkable 1 probably 4 years ago on sale so have tried to make the most of it. I agree it's a huge let down, they had an incredible opportunity to make this a FOSS dream but are moving in the apple direction of telling users what they want and not providing settings. It may still be some peoples best option but I personally run a very old version of the software and have multiple FOSS programs installed just to make it worth using. I must admit the writing experience is phenomenal, everything surrounding it is a letdown. They are trying to be a hardware, software, and cloud company and seem to be spread too thin, choosing a worse experience for users rather than open sourcing things. Their "display manager", xochitl, which is the software you interact with when the device is on, has no API meaning theres no programmatic way to do, well anything. You can only use the stock software by clicking the screen. The files produced by the tablet are in a closed proprietary format so only the device/ their cloud can convert them to pdfs. Some efforts have been made to reverse engineer the file format so FOSS devs can write programs to render the files, though I'm not sure the status of that with the newest format.