Subtle Braminification of all fictional Heroes

In all the recent ramayan serials being telecasted Ram and Lakshman are shown wearing "poonool" or the so called sacred thread which is a marker for Brahminical castes.

The peak comedy is, Hanuman who should not even come under any caste segregation is shown wearing this sacred thread.

However, Ravan who is half Brahmin does not wear it in any depictions. How do you view this Braminification of all the heroes even though it is Historically inaccurate?