It doesn't seem like you're defending the right to thought. You're defending the right to think sick thoughts, without them being looked upon as sick
Yes, absolutely! Because what is being considered by the mainstream society as being sick today, might be accepted as being something perfectly normal and natural 10 years later.
When I was 5 years old and my parents happened to catch me playing with myself, they were so shocked that they not only beat me up but also told me that if I continued doing that my penis would eventually fall off. Being 5 years old, I obviously believed them, and although I continued to masturbate whenever they were not at home, my enjoyment of my body was being constantly spoiled by the overwhelming feeling of guilt and fear.
My parents were so horrifed by something that most people today regard as being normal and harmless, because when they were growing up, their own parents had jammed down their throats the same kind of guilt and fear of masturbation that my parents were later trying to pass along to me. But because by now the society had accepted the fact that everyone masturbates and that masturbation is perfectly natural, most parents no longer subject their children to the psychological torment to which my parents had been subjecting me.
However, unless somebody had publicly expressed his/her thoughts about the benign nature of masturbation, most parents would have still been telling their children all those ridiculous horror stories about it, spoiling for them some of the most beautiful sensations that their bodies could ever produce.
So, please, DON'T be afraid to speak out your thoughts, no matter how controversial they are! This is a crucial part of progress and of bringing up a happier generation in a more open-minded and humane world.