yes, @Nix is right, this is how it works
(although the about me section is more noticeable on desktop just due to page layout, it is public and fairly noticeable) i've picked a random user to show you what i mean.
so it is there, its just the way the pages are currently tiled it is hidden.
i make no claim that this is the best way though, its just been this way since well before i turned up.
i suppose it is a matter of visibility in the space vs how much you can write. i could probably work out how to put about me in the left sidebar, say under personal information. the upside of that is it would be more easy to find and view, the downside is that you then have less room to write before it starts looking silly just because of fitting the text in that space.
with this setup when about me is opened, you basically have a full page to express whatever you want about yourself (within reason), but its less visible especially on mobile