Reminds me of their $2.4B bus terminal, which opened in 2018, closed a month later when they noticed structural cracks, reopened in 2019, then closed in 2020 for covid19. Had to walk under its unfinished skeleton every day going to work.
Since $2.6B can be too big to think about, Salesforce Tower (tallest building in SF) cost $1.1B to build around the same time and in the same location. It took 5 years to build.
Why did I mention Covid, to illustrate the point that things are more valuable now rather than later, cause you don't know what's going to happen. I don't want to hear that it's going to be useful eventually when they could've KISS'd and made something useful years ago.
As for the bus-station-in-the-sky...talk to any AC Transit planner and they will say (privately) the agency would have much preferred for transbay buses to continue down Market St (i.e. similar to how BART works). But AC Transit is not allowed to compete with SF Muni, so instead a giant bus parking lot was built above some of the most pricey real estate in the world.
So yes, the station is yet another example of Bay Area dysfunction.
Why did your project take 2x as long and cost 5x as much? Because somebody on the internet made snarky comments...
No, this is grift, red tape and incompetence. Go look at other cities in the US, they don't have these costs that are anywhere near SF for the same amount of work.