The robot was designed to perform such a thing and the change in his personality is an error according to the scientists. Anyhow whether it is an error or not, one thing is clear i.e Murderbot cares for humans in his heart and that’s why he plans to go to Dr. Mensah. He wants to tell everyone about the plans of GrayCris and for this, he needs strong proof because it is he who is wanted by the police for his ill doings.
Fugitive Telemetry and All Systems Red are also about strange philosophies of the author. Martha knits the stories well because of which we quickly get engaged to the thing and then don’t want to part from it. Entire series is a one way trip thus there is no returning back once you have started the first part.