CANVAS Technology interview questions

Interviewer said we'd have 20 minutes to talk. He called about 10 minutes late. He asked me a couple boilerplate questions about why I was interested in the position. Finally he concluded with "All right that all sounds like it lines up." Then he proceeded to send me a 1 hour, timed, hackerrank quiz in C++. He never let me get a question in and he was well aware I have almost a decade of experience in the industry but have been programming in C. After the quiz he followed up and said he'd be in touch. He never followed up and my application went to 'no longer under consideration.' Obviously I did not complete the quiz to his liking. I sent him a follow up email explaining I'd love to go over the quiz on the phone and explain that I have experience with C++ but it hasn't been my recent focus. There was no response. In general I think this company seems interesting, but the entire process felt robotic and distopian. Their number 1 priority seems to be programming language. A new grad would have probably passed the quiz with flying colors but someone that has spent a decade in the domain with a different language was overlooked. He never asked how proficient I was with graphics algorithms and control laws and the quiz was a tic tac toe game. They're building a robot, not completing a timed-trial of C++ syntax. I wish the company the best, but I think they will lose out on a lot of brilliant engineers that are a great cultural fit to their company using this method of recruiting. They will hire people that look good on paper but are really just proficient with syntax prior to starting the job. It yields a feeling of disrespect and wasted time.

I had been given Coding challenge followed by HR round and then they gave on game problem and had technical interview on that. Technical interview went well but next day they gave reject.