It's not Rubika, its Rubina.
I think Rubina is the smartest contestant there, the only reason most people do not understand her is because she thinks very differently. She is someone who will go by the rules and she actually understands BB's manipulation. She is the only one who pointed out that BB wants them to react but when they react, they get bashed for it and when they dont react, they get called out for doing nothing. I mean that's something none of them realised.
I think she is one of the few who's actually being themselves completely this season and it's not her fault she is a little OCD, she wants things done a certain way. The only issue with her is that she may become invisible on purpose because she cant be asked with BB ka bs. I hope she doesnt do this.