That's simply incorrect. Anakin was also not "made into Vader" - he already was Vader and Obi-Wan knew he had become a Sith and had been that given that Sith name prior to their confrontation at Mustafar.
No it became a Sith, but he was not half robot or going by Vader when left for dead…
He had never referred to himself or had anyone else referred to him as Vader last Obiwan saw Anakin