No. People who have OCD do have a mental disorder, and unfortunately some people still think that having a mental disorder means a person is “nuts.”
These people probably also think that you could just gain control of your OCD and stop it if you would just put your mind to it. If it were that easy, there would be no mental disorders in the world.
Instead, mental disorders are very real and very debilitating. People with mental disorders are often silent sufferers because many of them hide their difficulties and either do not get treatment or put off getting treatment until the effects of their disorder are very severe. Actions that might be socially interpreted as “crazy” could be the symptoms of an untreated disorder.
As for “abnormal,” that word typically has negative connotations, and yet there are many things that are abnormal that we consider good. For example, being a genius is abnormal, given that only a very small percentage of the population meets the criteria for genius-level intelligence. But we consider this abnormality a good thing. So, although having OCD is abnormal, abnormality is not an inherently bad thing.
This question really boils down to what many people think but few ask, are people with OCD (and other mental disorders) bad people? The answer is no; they are people suffering from a problem that is treatable, and they have the ability to live happy and productive lives.