I like the majority of your post, but I take issue with that "secondary" device comment (especially since you appended 'at best' to that). There's no fundamental reason in modern times why one's mobile phone couldn't be a/the primary device in their life, and it is this thinking that they're automatically secondary or worse that leads to so many limitations in modern mobile devices, methinks.

My N900 is my primary device in many respects, and if it weren't for the lack of sufficiently up to date browser, a modern office suite (I'm talking like the entire LibreOffice, not just the code text/spreadsheet/presentation editing that passes for mobile office suites nowadays), it would be my primary device, period.

As an aside with RAM though - I am no stranger to low RAM devices, and often I too would express the same sentiment as you, but I will say, when I recently got upgraded from a 3GB RAM computer to an 8GB RAM computer (as well as similar jumps in specs across the board), it does make a pretty noticeable difference for my use cases. It's subtle and minor, but it pervades everything in a way that adds up. So while I too look at people decrying 1 GB of RAM on a mobile device as too low and facepalm at it, the benefits it can bring are definitely sufficient that I wouldn't call it 'mindless ranting' for just that.