I am really amazed that almost every response to this sees speakers (i.e., audio equipment) and then says something about sneakers (i.e., athletic footwear).

I thought about this comment for awhile because I have unassailably high class friends who have spent $10k+ on TVs and sneakers. I think the key is they just do it with confidence. I jokingly made fun of my friend's sneaker collection but he just laughed it off without any hint of concern. Once you understand all the different social queues then you can start to act however you want as long as you have bulletproof self confidence. Taken to extreme lengths you might end up being referred to as eccentric but these days it's almost a desirable label.

But are they smart sneakers with voice control?

Totally backwards. You'll find more expensive shoes in Harlem than Astoria.