It cannot tell us with certainty what any individual trait looked like in practice — genetics provides predispositions and probabilities, not certainties. Ötzi may have had darker skin than most modern Europeans, but the specific shade, texture, and appearance of that skin involved many genetic factors and individual variation that the genome does not fully determine.

The genome can tell us about his genetic relationship to other populations, ancient and modern.

It cannot tell us about his cultural identity, his language, his religious beliefs, his social status within his community, or how he understood himself.

Genetics and culture are different systems with complex and non-deterministic relationships.

Knowing that Ötzi had unusual amounts of Anatolian farmer ancestry tells us something about where his population came from in the deep past — but it does not tell us whether he thought of himself as part of a distinct group, what ceremonies he participated in, what stories he told, or what meaning he attached to his copper axe.

The genome can tell us something about his health predispositions.