2) There are too many people involved in the modern tech hiring interview process and they are perennially confused about their role in the process. Maybe the hiring manager thought their internal recruiter would send feedback. The recruiter thought the “talent acquisition specialist”would send the feedback. The talent acquisition specialist thought the recruiting software would do it.
3) Any technical position posted attracts a huge number of candidates, most of them completely unqualified. (I don’t mean “Go backend dev applies for Swift frontend job”, I mean person with no education or obvious relevant experience with a background in various MLM endeavors applies for a sr-level architect/engineering manager position. Sometimes there are hundreds of unqualified applicants for a single position.)
4) Candidates are ghosting companies just as much, and the recruiters/hiring managers get jaded.
5) The hiring manager — the person with, arguably, the most to lose from a poor candidate experience — probably does hiring the least of their major job responsibilities and just isn’t very good at it.
* Bonus #6 I forgot — if your LinkedIn profile sucks, and by “sucks” I mean doesn’t stand alone as a portrait of your skillset, fix that. Put a summary under each job you’ve held, have a paragraph in there about your strengths, goals, etc. I cannot count the number of times I’ve interviewed someone and been given the candidates “resume” only to find out it was a screenscrape of their linkedin profile that was completely useless, but that the candidate did upload a detailed, well-thought-out resume which our talent management software discarded for no discernible reason. Now, those are just the candidates I’m aware of - I imagine the number discarded by the recruiter based on a faulty assessment driven by the same data is much higher. *
Just my personal opinion, based on my experience as a hiring manager at a medium-sized tech company.