Not quite as I saw them, but I certainly saw it clearly not human. A composite of plastic, metal and flesh. Comfortable with the label it.
Though the counter to that, I'm sure the books mentions sexbots basically being the same platform as secunits, only with a gender and without built in weapons. With a combatunit being the same again, but with even more weapons (including cyber). Which does say maybe Martha Wells had the platform, without armour, as maybe more fleshly than we are thinking.
The TV series is good, but it's not as I saw in my head. Other than "Sanctuary Moon", which nails it.
I am surprised there hasn't been real unset by fans by giving Murderbot gender. They could have at least picked someone who didn't look binary. But Skarsgård has got the right character if not the right face.
It's an interesting point, and I agree with it politically, but in the books it's made clear secunits look androgynous and non-human.
Some change between media change is always going to happen. I think Skarsgård is doing as good a job as can be done with his face. I'm making peace with it. Maybe the bigger problem is the dismissiveness of the portrayal of Preservation Alliance society. But we did live in the Corporate Rim!