Summary - I was targeted and courted by their recruiting team. I was rejected because I don't have the "background/experience they are looking for". I wouldn't recommend this company to my friends because of my interview experience there.
The initial recruiting process was pretty well thought-out: I was invited to a big event with dozens of people. A while later, without me following up, I was asked to attend a smaller event with fewer prospects. The recruiters are nice, efficient and professional. I have nothing but admiration for them.
After the second event, there wasn't a phone screen, just an invitation to onsite. On that day, I thought everything went really well until I was interviewed by a manager in their SF office.
I was given an "open question" where there is no "bad answers". It turns out that was a large project that the manager worked on in a previous job. And it was anything but "open": every assumption, alternative I put on the table was quickly dismissed. Among the few left standing, one was meant for me to prove it wrong myself.
I have been given those types of questions before but never felt so entrapped. I don't think the interviewer meant it. Nonetheless, I'd say, if you don't want to work with someone, day in and day out, who has superiority complex, do not accept their invitation.