DB3 was kind of a mess with the keyboard but I’m finding it more stable now.
Looks also like there was a fix to a bug when on an active call where the screen would flash randomly - now it stays steady. Must have been a bug in the new active call screen that got squashed.
DB4 seems more stable and also seems to be a little more battery friendly from what I’ve seen so far.
So basically, I agree with your points as things I have also noticed so far.
It’s because a lot of people migrating from Reddit landed on .world and created or found their familiar named communities and that’s how it was on Reddit - US centric top level type communities.
Is .world the best place for US centric communities? Maybe not just based on nomenclature but since you asked why, that’s the reasoning. It’s in the description of Politics specifically (it even calls out migrating Redditors).