Why are there no y-axis labels on the first chart? That seems manipulative to me, so we just have to accept the author's own definitions of "rich" and "middle c

Why are there no y-axis labels on the first chart? That seems manipulative to me, so we just have to accept the author's own definitions of "rich" and "middle class." It also seems manipulative in chart 2 to label the middle quintile in big letters as "middle," as if just that 20% is the middle class. I'd love to see more transparency in these charts so I can make my own conclusions. It almost seems like the charts go out of their way to hide the absolute dollar amounts.