Ruffalo also points out that he believes that the idea of bringing love to a superhero is "beautiful" and that there's nothing wrong with making the Avengers characters more whole—in fact, he thinks that Black Widow is one of the strongest characters in the film (again, no spoilers, but she plays the protector in her relationship). To him, the fans are misplacing their anger.

"I think that what people might really be upset about is the fact that we need more superhuman women," he wrote. "The guys can do anything, they can have love affairs, they can be weak or strong and nobody raises an eyebrow. But when we do that with a woman, because there are so few storylines for women, we become hyper-critical of every single move that we make because there's not much else to compare it to."

Ruffalo himself has been a vocal advocate for women and has encouraged Marvel Studios to become more inclusive, even tweeting out last week "@Marvel we need more #BlackWidow merchandise for my daughters and nieces. Pretty please." In his mini essay, he reiterated that he believes Joss Whedon has the same sentiments at heart and that it's been hard to watch him take the fall for a problem that certainly has more to do with the business of film than anything else.

"I know Joss really well," wrote Ruffalo. "I know what his values are. And I think it's sad, because in a lot of ways, there haven't been as many champions in this universe as Joss is and will continue to be." But, he continued, "People are going to have their opinions. And that's actually a great thing. The fact that this is a debate that's coming out of this movie is probably a positive thing."