This season of the show has begun to touch some critical cords in American history.
Abe's storyline has been building up a commentary on America's paranoid episode against communism, which robbed some great writers and thinkers off their jobs during the Black List event. Now, it's always pleasant to watch an anti-stereotype, which Abe displays with his idealist, socialist values despite the affluent lifestyle he was able to sustain for many years. It's not surprising that his old values rise back up in him upon the loss of his material comforts.
On the other hand, Abe is not a hypocrite. His advice to Miriam, "use your voice wisely," is a universal warning about how the advertising industry will change the course of society. These are the times talented people began to yield their voice to the service of brands whether they tell the truth or not, for a paycheck, without a full sense of the impact they have on general public's minds. The rise of the American Mad Men marks a turning point that we know today to have colossal consequences. Abe, having witnessed both ends of the spectrum, the talent losing their voice along with their income vs the talent being rewarded for using it, for any monetary opportunity that comes up, has the wise advice for his daughter.