For six years of my life I owned a Snap-on Tools franchise. Every week people would jump on the truck and ask "what's new?" and then purchase the same sockets that have been made for 90+ years. "Thinner" is just the latest talking point. If it wasn't "thinner" it would be something else. I would see my customers on a weekly schedule, and I was asked "what's new" 100 times a week. If a marketer wanted to give me the words to tell the people who asked that question, then I would gratefully accept as a salesperson, unless I could think of something that would work better.
If you would like a thin case, I am getting this rolling http://sascase.com Apologies for the blatant self promotion.
Likewise, how is it a strawman? The original comment was that the person doesn't care about thinner because it becomes thicker when you put a case on it. A phone that doesn't need a case need only be thinner than a comparable phone with a case on it to be thinner in practice. That's a direct response to the original comment, providing a case where the comment is true.
So you don't have a case and you protect your phone quite well. That is a pure anecdote. Just because you want it to be an anecdotal strawman doesn't mean it is one.
One of the properties of tempered glass is that it can withstand great impact on the front, but can shatter if dropped on the side. If you look closely at those Youtube videos, they will all probably be hitting the glass dead center. If you want to see a smartphone shatter, look for a video where the brunt of the impact is focused on one edge of the glass. Like this one:
http://www.youtube.com/watch?feature=player_detailpage&v=Nyr...
You also say that iPhones need cases, which is not true.
And the story I told is called "storytelling". It's a way to emphasize a point that's entertaining to read. Point 1: people use cases on their iPhone. Point 2: the Lumia is thinner than an iPhone with an average case. Point 3: The iPhone is thinner without a case. There's your facts, without entertaining storytelling.
Many people use these devices without cases, as they were designed to be used. Some don't, for reasons that make sense for them. Many will appreciate the less obtrusive dimensions. Others will never give a crap. Can you explain an obsession with sweets to someone without a sweet tooth? As usual in threads like this, people argue about idiosyncratic tastes.
The larger device is far more usable for collaborative work than the mini, and the weight difference makes it far more portable.
To explain this to you one would have to explain the concept of marketing.
Deleted comment