It started out fabulous, with "it's okay to be feminine." I agree. Feminine is good! However, it quickly became problematic. The author believes that all women must remain modest and that is the most empowering thing. Yes, for some women, modesty is empowering, but all women are not the same. Some find modesty empowering, while others do not. It is simply a matter of preference, and one is not necessarily better than the other.
"Put Time and Effort into Relationships." Okay, there was nothing wrong here at all. Do not ignore your significant other, do not broadcast your commitment issues on social media (on second thought, please do so that everyone knows who isn't worth time), and, if you are not in a polyamorous/open relationship, DO NOT CHEAT. Relationships do not carry themselves; you must work with your partner to have a solid one.
"Have common courtesy." Again, this is 100% accurate. Be nice, play fair, use your manners. Take your selfies, relish in the likes, but do not allow the attention to take away your kindness.
I do not believe that class is dead. I think that the definition of class is simply changing. Do I agree that sometimes, we, as millennials, need to take a step back and think about if we should say or do something? Yes. Do I believe that habits and cultural norms have changed over time? YES. What was considered high-class in the 1940s was not the same as in the 1860s. Should we be worried about the new definition of classy? Nope. Just do your thing. Unless you are being rude, disrespectful, or mean, you are a-okay.