If your interface uses iPod Out. Which is why the product details state the iPod Out is not supported. Not all interfaces rely on iPod Out. This is covered in many recent threads on this topic.
That interface does not use iPod Out. If your interface emulates a CD changer, SAT radio, etc it's not using iPod Out.
"X was so YYYY" statements are just as ridiculous as any other broad, sweeping generalization. Going cable free isn't everyone's top priority. For some, BT audio quality isn't sufficient among other reasons. As with any topic, don't just assume that your preferences are universal no matter what year it is.
Plenty do. "I don't use X" != "No one uses X". Should be pretty obvious through real world observation.
One has nothing to do with the other. Understanding proper care & use of a smartphone isn't exclusive to luxury car owners. There are luxury car owners that know nothing about smartphones. There are people that don't own luxury cars that understand proper care & use of a smartphone. All types of people drive all types of cars.
It's all relative. BT audio can be further compressed. One can not care for it without being an "audiophile". Audio's a very subjective matter and there's a whole spectrum of preference out there -- not just what you prefer and "audiophile".
Further, not all audio compression is equal. While compressed audio
can be "uber compressed" with a lot of artifacting it's not a must. Be careful with broad, sweeping generalizations -- especially when they're based on your specific prefrences.