The "trolls" Fry is talking about here are progressives. At least, that is the signal I'm getting from the following: "It doesn’t matter whether they think they

The "trolls" Fry is talking about here are progressives. At least, that is the signal I'm getting from the following: "It doesn’t matter whether they think they’re defending women, men, transgender people, Muslims, humanists . . .." He is essentially invoking the "snowflake" meme. And, in what might perhaps be called an instance of the Law of Snowflakes, it's in a context where he is whining about discourse not taking the tone he prefers. (If it seems weird that I'm ignoring 80% of the parent poster's content in his comment, it is because its initial iteration of that comment only contained the first two sentences.)