Yep, it does. If you are ready to give one month of your life to understand "perfectoid spaces", that might be a wise choice, you can only really tell once you've done it, because there doesn't seem to be an upfront way of knowing what you are going to get out of it. On the other hand, I am currently investing two weeks into learning "geometric algebra" because I found a book that tells me in its introduction why it's worth for me to learn it.

Exactly - if you want to make choices based off what's economically the best (studying CS), that's fine. But there's so much beauty in the world that is "impractical" to reach for (like studying music, art, seeing nature, etc)