It apparently only touched on social marxism. Everyone being exactly equal, except for the Leader who keeps its specialness.
In the end, leader is exposed as a fraud and everyone embraces their individualism. So, yay?
Still deeper than 99% of children's cartoons are willing to go.
I also hesitate to call myself a 'brony', though I'll admit to watching the cartoon & reading the comics, it's not like I've watched most of them more than once, I just added it to my queue of stuff to watch because I really like 'new'. I enjoy it, but only the same as I enjoy many other shows.
That being said, the ponies are badasses. They're not kidding when they say that Equestria is a realm where your average Dungeons & Dragons adventuring party would hesitate to tread. The main cast lives next to a forest containing - Dragons, giant serpents, basilisks, manticores, giant star bears, flying tribbles, magical poisonous flowers, and many other things that a party of murder-hobos would consider 'challenging'. Meanwhile, once you include magic abilities the Ponies are actually ahead of many sci-fi races, doing things like controlling the weather. As in scheduling rainfall, sunlight, etc...
Oh, and they actually break gender stereotypes/rules left and right. The main cast are business owners/operators, appointed to important positions, etc... Rarity runs her own clothing shop. Rainbow Dash's 'job' varies a bit, but she's often in charge of the local weather. Twilight was the town librarian/troubleshooter/princess's representative. Applejack runs the farm(cooperatively with her brother). Pinkie works for the local bakers(specializing in sweets, apparently), but seems to have a side line arranging parties. Flutteryshy is the local wildlife manager/caretaker. Keep in mind that this translates to 'provides veterinary care to animals such as manticores'.
