This meme draws the wrong conclusion and is deliberately misleading. As of this writing there is no evidence within the canon of Star Trek that would support the idea that the Klingons had trans rights. So I am exposing this fraud here and now.
Curzon was a male Trill and host to the symbiot named Dax. And Curzon Dax was a beloved old friend of the Klingon Kor. However, Curzon Dax was two separate lifeforms sharing the Trill body. It would be more correct to say that Dax was Kor’s beloved old friend.
A Trill can be surgically bonded with a symbiotic sentient parasite. This symbiot lives within the abdomen of the Trill host. This allows the host and parasite to share memories and skills. Even those possessed by former hosts of the symbiot.
The symbiot itself was a long lived organism. The Dax symbiot was over 350 years old by the time the character Jadzia Dax is introduced in Star Trek: Deep Space 9. Jadzia was the 8th host for Dax, and it would live on to take a 9th host and beyond. Some where male and some where female.
This is not the definition of transgender in the real world today. It isn’t even close to resembling it. Thus this meme is fraud. A lie. And a deliberate one for political and social gain.
Today, transgender is a mental condition that is being forced into acceptance and celebration by western civilization instead of treating it properly as a mental illness. We need to give this unfortunate people compassionate help instead of exploiting them for political gain. It is not two beings sharing one body. It is not two souls sharing one body. It is one soul, one body, and one confused mind.