I really don't understand how artists with quirky or not-actual-words spellings expect to gain traction, since they cannot be easily referred to in speech --- plus people lose interest in finding out the pronunciation --- and also defy categorization in being listed in print.

+5cm could go before 0xx or in the 5xx list, or even under P if it's meant to be Plus. Therefore quirkiness whilst individualistic, can mean ignoral.