Given the proximity of this development to WWDC, it seems like there's a chance Apple has acquired Bartender and has incorporated its functionality into the next MacOS release.
I'd hope for Apple to actually incorporate this into the fucking OS itself so that we didn't run through these hoops for pretty basic functionality that has been in Windows for what, two decades?
The value proposition of these kind of third party UI apps is that the developer cleverly figured out how to manipulate Apple's APIs to do something Apple didn't really intend. Apple themselves can just write their own private API to do it, they don't need the clever hacks.