The guy who runs the site literally works for Brave. It says so in the about page.
just_browsing
A big English speaking population, it's small enough that people have a sense of national pride but still large enough to have plenty of users, and most importantly a 3 color flag that's easy to draw with no outside coordination.
Firmware doesn't run on an OS, you're probably thinking of drivers which are different. Drivers are software that tell the OS how to interact with specific hardware.
Firmware is software that's baked into specific hardware components and it exists outside of the OS. A visible example most people are familiar with would be the BIOS which is firmware for the motherboard. Hard drives, graphics cards, RAM, etc all also have their own firmware.
Other devices such as microwaves, washing machines, cars, or anything using microprocessors (so pretty much everything these days) also have components with their own firmware. It is true that device firmware can drive a UI on some devices such a as a microwave, but most people today wouldn't consider that to be an OS (semantics, I know).
It's not like he just wrote a check. He took out loans and got other investors to sign on to fund the Twitter purchase. Even someone as wealthy as him has to answer to others.
Some are, but not all. The point here is building entire towns or entire new city sectors in one fell swoop instead of planning them out and building them in stages so plans can be adjusted as needs inevitably change is a bad idea. It's things like this that have directly led to the current property market crisis.
Of course if buildings are already there it makes sense to use them, but they might have been able to put something better suited or more economically viable there if they had staggered the construction.