Paraphilia means an intense reoccurring atypical sexual attraction, paraphilias are just fetishes, dude likes feet, he has podophilia
Paraphilic disorders, like pedophilia, are mental disorders. Perhaps “unnatural” isn’t the right wording, but they’re usually harmful.
They all are natural, if they weren't natural then why do they appear in nature (because yes humans are part of the nature).
Those paraphilia are bad not because they're "anti natural" but because you have tou harm someone to materialize it.