I cannot stress this enough: the stark white, the inability to change or set certain widths, the tiny, too light lines that separate columns, and the overly contrasting colors are physically painful. I get ocular migraines when using your software since your "upgraded" design. Themes are no help; they do not offer "softer" options or allow you to customize the theme. (Notions and even Gmail let you) and dark mode can be too dark. There's no happy medium or accessibility options—like most websites have nowadays.
I like the software's functionality, but if I can't use it without my brain shutting down, I'm going to look for ways to switch away from it.