Comics, like movies, are done almost exclusively by anti-Christian, anti-American leftists. To leftists, everything is political, and everything must promote leftism.
As for Batman & Robin, they were actually regarded as having a homoerotic subtext (due to communism in the media) in the early 1950s, as propounded in Seduction of the Innocent by Fredric Wertham, and were the focus of the Senate hearings that resulted in the creation of Comics Code Authority, with the consequent blandness of DC superhero comic books from then until the 1960s when upstart Marvel decided enough time had passed for comics to again become innovative and daring.
Whether or not there was any truth to the charge back then - which was seen as very negative and dangerous - it is spectacularly true now, but viewed by the communist media as wonderful and beneficial.
In the 1950s, Americans by and large opposed communism; now they embrace it.