It's not so much a pressure thing as it is me learning how to be a product manager. My job as a PM is to sort through the noise and figure out what will actually improve the app.
For example, screen reader feels very clear cut to me. There's an obvious problem (a need to navigate the site without your eyes) and an obvious solution. I would have to understand other accessibility needs better to solve those problems.
How my choice of words "problem/solution" is ok. I think everyone is perfect the way they are, and what I'm really trying to say is "what are the minimal steps I can take to meet everyone where they're at".
TL;DR, how about we start with this. If I could only add 1-2 more themes, what 2 themes would benefit the app the most from an accessibility standpoint.