I haven't felt the show has any real political leaning especially the more I see it. Certainly there is the inclusion of (potential spoilers I guess) the two key female characters in the industry and one bisexual guy. But personally I've felt everything is just organic, and that the characters find contentment when there is a balance of home and work life. The women hit an emotional wall without their husband and children, men feel inadequate when not leading the household, kids go out of control when their traditional family setup is destroyed. Even the bisexual man, a phenomenal character in my view, isn't presented as an LGBT promotion. I'd say it's almost more a cautionary tale. His true love and joy is found in romantic relationships with women and his (very occasional) foray into homosexual acts are more a slip from the norm.
On the other side, it does show that it's good to allow people to breathe, at least until they find their footing. Cameron, the main female lead, reminds me so much of my ex, right down to the short blonde hair and being from Texas. Cameron is a punk rock girl and somewhat androgynous who simply loves tech and in particular video games. And that love for them causes her to want to create things that she would enjoy. My ex died of an overdose almost two years ago and I wonder while watching sometimes that maybe she would have benefited from immersing herself in a similar job for at least a while. She had too much free time and wasn't able to channel her creative interests, largely leaving her as just a consumer.
There's a fine line in storytelling between pushing an agenda and just trying to present complex humans in an honest way. I'm not saying the show doesn't ever cross into an agenda, just that, at least early into season 4, it seems to me they've mostly stuck with the latter. I love this show - an all-timer for me.