That's because 7.1 kind of is the master template. The examples you start with are all just various iterations of the same code base - they're not distinct templates - as opposed to 7.0 which featured a number of different ones (which made the template name/family so important). I agree that Squarespace should make this clearer.
The template name is now redundant for two reasons. First, 7.1 allows you to achieve the layout and look of all of the starter websites, regardless of which one you start with. Blog layout, colours, fonts, everything. The second is that 7.1 doesn't allow you to sw