Remarkable means subscription. And I *DO NOT* want that. If this could support self hosted stuff like Nextcloud or something? Or a simple shared folder?
RSS or Pocket client?
But no, nothing, just the subscription stuff. So it's a no from me.
Account and subscription are not strictly necessary for local usage.
And there is https://github.com/ddvk/rmfakecloud that allows to sync files without account.
reMarkable still work really hard to force you into a subscription - or at least into using their very bad, non-zero knowledge cloud service. ... I don't know why but it is not obvious why this would be for the benefit of the user.
I own a reMarkable 2, but I fill it via RCU [1]. I will absolutely not buy into yet another opaque cloud offering in 2025.
edit: The project you linked looks interesting, though!
RSS or Pocket client?
But no, nothing, just the subscription stuff. So it's a no from me.