Telephony isn't that difficult and all "american-style" smartphones do a perfectly adequate job. If you can make calls and answer calls, it's a phone. Most people don't need anything more than that. I don't see what more Nokia can offer on that point but they lots of room to screw everything else up.
I think you're confusing what 'people who read HN' want with 'what the majority want'. It happens really commonly in tech-literate circles.
I'll grant you that texting is important, but that revolution happened a decade ago with the Nokia 3310. You don't need a smartphone for that.
The calling experience on most smartphones is horrific. On my iPhone I need to find an icon and tap it before I can even start dialling. Once I do get through to someone, the signal reception is weak - and this is an iPhone 3G on a UK network.
Pick up a Nokia S60 smartphone. There's number buttons on the front of them (except their weak attempts at touchscreen phones). You push them. The signal quality is rock-solid. These are things that normal people don't even think about until they dismiss an iPhone or Android smartphone as 'too fiddly'.
Nokia screw up when they try to copy this style of device and forget that their strength is excellent telephony devices. Which, despite the trendiness of mobile browsing and 'apps', is what most people want from their mobile phone.
That's why Nokia still own the market, because their devices appeal to people who primarily want to make phone calls from their phone. iOS, Android, WebOS, and Windows Mobile will never crack that market.