Gone to Glory Wearing a Beer Advert

Found by a walker wandering through the woods:
Fragments of flesh, and bitten bits of bones
An ankle joint still jammed into a shoe
Sporting a checkmark, a fashionable sneak

And his tee-shirt, boasting a famous beer,
Unread in those months among the leaf-mold
As lonely winds and seasons passed over him
And the name brands abandoned to the mists

He’s gone to glory wearing a beer advert
And no one knows what any of that means