Battery: I unplugged it from the charger 10 hours ago, it's currently at 55%. Typically it's up to 22 hours when suspended, up to 12 hours when idling without suspend and about 3-5 hours of active use depending on what you're doing. Could be better, but can be worked with.
People also successfully use Librem 5 (which I happen to use), OnePlus 6, Pixel 3A and some others. There's not a lot to choose from, sure, but they do exist.
You can disagree but at least try to make an analogy that makes a modicum of sense...
The main issue is that "Europe" is not able to make a phone. They have the choice between American and Chinese at large (mainland and Taiwan) platforms, including cellular stacks, and then most likely manufacturing in mainland China and/or via contractors like Foxconn (also Chinese sphere as from Taiwan).
So indeed, the "full stack" claim here is to be taken in the narrowest sense possible, i.e. the apps software on top of the Linux kernel (and still from other comments it seems they also use Android drivers).
Let us clarify here as it is very different indeed.
The Jolla C2 Community Phone is done in collaboration with Reeder, who is the HW vendor. This means Reeder sources the components, plans the production and does the manufacturing in Turkey. Jolla provides the complete software stack (Sailfish OS) which is installed by Reeder in the manufacturing.
In the new Jolla Phone everything is different. Jolla is the vendor, has designed the product itself, done the component sourcing and pays directly to the component vendors. We control the pipeline. Further, we have secured our position for the initial memory batch with advance purchase.
Also, to be clear: Reeder has no involvement in the new Jolla Phone.
Thank you for asking, very good points to clarify!