The best subjects are ones that are presented in some sort of context where the viewer understands that retro-ness is being invoked. Like, umh, Instagram.
To my memory circuits that looks entirely too color-managed and post-processed to be Kodachrome! Not enough roll off in the bright areas, too much granularity in the mid tones, and the color balance is too neutral, even though Kodachrome itself had an uncanny resistance to color castes. The red is properly clipped, but maybe not sufficiently CocaCola-esque.
The best digital Kodachrome simulations I ever saw were from my pioneering 2mp DC-210 digital camera made by Kodak itself, in about 1999, when the digital market was owned by Kodak to lose, and they did.
It's so easy to be an expert on things that aren't available anymore!
Hard now to imagine that there was a time when "color" and "management" were rarely used together. It was so liberating when everybody had to put up with the same in-your-face color problems, which could be conveniently re-labeled as "creative tools."