This is going to ruffle some feathers but bear with me here. I wonder if gaf being comprised mostly of men means it's less likely that the average poster is able to identify with the female perspective the first season was trying to employ from start to finish. We're so accustomed to watching entertainment through a male lense, Jessica Jones is seems less compelling in comparison.
Now before people jump down my throat, the show admittedly has more than a few shortcomings, and just because it focuses primarily on women doesn't mean men can't enjoy it or that you're sexist just because you didn't. For example, I didn't find Luke Cage as engaging as it seems many black people did. That's not to say black people only like it because it's a "black show" or that non-black people can't enjoy it just as much. But not being black myself, I wonder if I simply had a more difficult time connecting with certain parts of the show due to less shared experience. That doesn't make me racist, and not liking Jessica Jones doesn't make you a sexist, but both sex and race may predispose certain people to liking it more or less on average.