Let me just say that the Remarkable also runs linux. Not only that, but I've been blown away by the ongoing results from the team at Remarkable. I only have the Remarkable 1 but they continue to ship updates for it, and these updates are often really substantive with sometimes profound new features. Their cloud service is free, no aggravating subscription stuff and even though they have the remarkable 2 now, they con…
And they give root access to the device along with GPL compliance statements, allowing for a flourishing developer community that creates tons of useful programs that can run on the embedded device. See for example https://github.com/reHackable/awesome-reMarkable for a list. There is also an opkg-based package manager and repo with many packages: https://toltec-dev.org/
I'd love to get work done in sunny locations, like gardens. But these LCD screens make me squint. e-ink would be THE solution to this, but the e-ink displays are too expensive, to well supported and not very big.