Don't get sucked into Twitter (recommended extension: User CSS)

twitter-detox.css

/* Hide menu items */
[aria-label^="Home"],
[aria-label^="Search"],
[aria-label^="Bookmarks"],
[aria-label^="Lists"],
[aria-label^="Timeline: Your Home"],
[data-testid^="AppTabBar_More_Menu"] {
  display: none;
}

/* Hide non-interactive user cells */
[data-testid="UserCell"]:not([role="dialog"] *) {
  display: none;
}

/* Hide right sidebar */
[data-testid="sidebarColumn"] {
  display: none;
}

/* Hide message drawer */
[data-testid="DMDrawer"] {
  display: none;
}