I'm sure something like this would be doable and I like the idea, but the stag doesn't seem structurally sound for example.
People generally just want cables to be buried, but apparently this poses more problems than just added cost, so companies are reluctant to do it (as far as I understand it at least, I've only looked it up briefly in relation to the Ventilus/Boucle du Hainaut project here in Belgium).
> the stag doesn't seem structurally sound for example
It's concept art, it doesn't have to be structurally sound or even make economic sense - the creators got their clicks!
We ought to be more sceptical of this kind of thing :/
Here in Germany there were still enough protests even against buried cables. The construction is still disruptive, and they aren't completely invisible afterwards (they emit heat that can lead to visibly different vegetation on the surface, and you can't plant trees on them) so they don't really satisfy the "but my property prices" crowd (of course they have a long list of real and imagined concerns, but imho they mostly boil down to disruption from construction, pseudoscience and property prices)
Moving the discussion to "we put some sculptures in your landscape, and in return those sculptures carry some cables" might genuinely help
Burying high voltage lines comes with problems of isolation. Air is good insulator while still allowing heat dissipation, ground is good conductor. You can isolate but then you need cooling. It get's complicated and expensive.