Well, considering the entire set of tablets available today, you've gotta admit that creating a device more open than any of them would not be hard to do. Google's selection of Android for their portable device OS back in the day was a big step forward, but since then pretty much every manufacturer has been entrenching into their own closed ecosystems. (And yeah, the success of Apple does have a lot to do with that...)

So Jolla can probably get away with saying anything they want on that front, as nobody seems to want to compete with them. It just doesn't look profitable to try and sell open portable devices right now.