Givebutter interview questions

The epitome of a bad interview process. 6 total rounds which is masked by saying "we value finding the perfect fit." All went well enough, then a surprise final round came with a new director. I made it to the references stage and they reached out to at least one of my references, I did a self-review, and they even contacted me to discuss something on my self-review. Two days later, a generic email template rejection. I asked for feedback and none was given. almost 5 weeks plus at least 12 hours of hard prep for nothing. Everyone was really nice during the process. The recruiter was great, but the candidate experience couldn't have been worse.