His philosophy, (and again, he's not very bright), is metal is better than meat because he can kill better with it. Check out SoF2 for a whole article written by him on the subject of arrgh killing better with full robot body. He's akin to a child desperate to prove he's just as good as The Other Guys even though, again, it's tech he doesn't understand and could never install (Tech 4) that someone else paid to put him in, because he's dumba nd violent and addicted enough to be a particular kind of tool.
I don't know what SoF2 is, but from what I recalled and after revisiting a wiki, I think that isn't all of it.
He was always drawn to violence. He started in New York gang, took leadership of that. He became only survivor of gang after military took it down and joined army. After being discharged for insubordination, he started a career as mercenary which then led him later to become tool for the Arasaka. Arrangement works for Smasher too as he can be what he ultimately is, a psychopath who has always been addicted to killing and sadism and practicing that is what makes him tick. Gun down a room full of people to get one who is Arasaka's target, he not only does that willingly, but also enjoys it. For Arasaka, there's no need to motivate him. They can count on him doing the one thing he is good at, being Adam Smasher.
As interactable character, there's nothing more to Adam Smasher than we seen in the game, he is a someone who would always feel like a robot, chrome or not.
What could be done with Adam Smasher is to study how survival of the strongest (note, a sidejob with V's neighbor, with a turtle, how that can be resolved. Darwin's realization was "survival of the
fittest") down to neurological aspects (psychopathy), appears to be a dead end, though in history of homo sapiens there's been an era where such genetic feature has been one of the tracks.
Will to dominate, no what's so ever moral restraints, survival instinct in theater of violence, yet always overextends. That's what the chrome enables for him, survive his own drive that would otherwise been his demise a long ago.
I could see learning about Adam Smasher via Braindances and other such sources, maybe some old mercenary could remember him, etc. Adam Smasher could very well be intellectually interesting, not as interactable character but study in real world terms and CDRP based on CP 2077 is studio that could make that work.