Two Sigma Product Manager interview questions

Had an intro call with internal recruiter followed by phone interview with a PM. After complete radio silence for months, I figured I didn't get the role. To this day, I have not been followed up with by HR... simply ghosted. I'm very disappointed in this behavior coming from a company as reputable as Two Sigma. It is common courtesy to close the loop with candidates. Don't forget we invest our time preparing for interviews too! I'm sure it's just a numbers game for the internal recruiters who don't want to waste their time on somebody who isn't going to work out, but this behavior will tarnish Two Sigma's reputation long term and cause the best talent to avoid applying.