What's next?You're looking for hypocrisy along the wrong axis. Apple is not the National Endowment for the Arts or the ACLU. Their role in the world is not to protect and expand the freedom of expression and peoples exposure to new ideas. Apple is a corporation. The purpose of a corporation is to advance the interests of the shareholders. More often than not, those interests are largely motivated by profit, but need not be exclusively so. If you look at this decision from a the perspective of business pursuing the interests of its shareholders, the hypocrisy argument falls away.
All of the subtle details about what is allowed and what isn't and why certain areas are black and white and others are grey are almost certainly explained by the balancing act between clarity and flexibility.
Will apps with information on abortion services be banned? Gay themes banned? Anything "too black" banned? Anything-you-don't-like banned?
If it's in the economic interests of its shareholders, should a company have slaves?