That pin looks to me like it is from a bushed chain. As far as I am aware most, if not all, bike chains are now bushingless.
Feel free to replace:
"Pin wear should be
even on the entire circumference in an ideal scenario."
with
"Pin wear should be
even on the entire CONTACT circumference in an ideal scenario."
About KMC's Sales Stories, like that mentioned "unique Bulls-Eye pin riveting system", well, Nothing New there, it's just a next.
See (in meantime remember?) their "Rust Buster Technology"
In the past, a dealer chosed and mounted such one.
The chain looked and sounded like the Silent Gray Fellow from Harley Davidson.
After a couple rides, the silence and gray on the rollers left the chain and joined the road dust.
Their famous "Rust Busting Technology" turned out to be zinc spraying.
But unlike in static applications alike roof gutters or bolts/nuts, in a dynamic transmission of force... let's say it's quicker than steel to wave goodbye.