What you described is just how Google (and others, in the before times) conducted onsite interviews. TripleByte got you a recruiter’s attention, maybe; but the rest was standard fare.
No that sounds like something Triplebyte might have set up. I got something similar but no plane tickets and Uber since I was already in the bay area. But I got the stack of interviews and several free meals / coffee courtesy of Triplebyte. Plus I still have the jacket and coffee mug. I know the current Triplebyte experience isn't anything like the early one, but this thread does start to sound like a false alarm.