Catalina menu bar on Big Sur.
Boring Old Menu Bar was developed to bring the "perfectly fine" macOS Catalina menu bar to macOS 11 Big Sur.
macOS 11 Big Sur does many things right and after a bit of getting used to, the visual style really grows on you. The transparent menu bar, however, is a bit of a legibility nightmare and something I could not live with.
Updated on Oct 17 2022