How hard can it be to show some basic decency and courtesy?
I've been related several times about people that wanted explicit reasons of why they've been rejected, and ending up mad at the (perceived as dishonest) hard truths they've been told, and anything said delicately can be dismissed, seen as cryptic or even displayed as hypocrisy.
Courtesy is hard, and all are not well equipped to see it when it's given.
I managed a hiring process last year (my first) and from the outset I wanted to make sure I let every applicant that we talked to know if we had decided to pass. It was a lot easier said/thought than done.
That email is horrible to send. My stomach dropped out every time I hit “send”, for exactly the reasons you stated. I dreaded the replies which often included some kind of “Why?” question.
I completely understand where the candidates are coming from. They want to know what they did wrong and how they can improve. On the surface this seems like an easy thing to do, but in my experience, it’s more like opening a can of worms. How do you tell someone “I’m sorry, you’re too junior, try again in a few years” or “your entire personality was off-putting/rude” or “you spent an inordinate amount of time in the interview tying to convince me I was wrong about tabs vs spaces and even sent me a follow up email citing more reasons” or “You told me you worked with PHP 6 when I asked you what version you had used” [0], or “you couldn’t remember if you used Angular 1 or 2+” [1], or “you told me you had a great memory then proceeded to say ‘I don’t know’ and ‘I don’t remember’ to 90% of my questions”…. The list goes on
When sending a rejection letter the best case scenario is that they say “thank you” and move on (or don’t reply at all). Worst case scenario, they start asking follow-up questions which I feel obligated to respond to, they get irate, and/or they attempt some kind of bargaining/arguing. I’m not going to say I’d never do any of these things myself (however unproductive) but it shocks me that some people think they can change your mind by arguing about why you passed on them.
It’s all very uncomfortable and feels like you are navigating a field of land mines.
[0] PHP 6 never was released, it went from 5->7, though you can find books on “PHP 6” because they were printed before it was clear the version was going to be skipped.
[1] Angular 1 vs 2+ is essentially a completely different framework. Anyone working in web tech should be aware of that fact.
If/when you don't want to interact further, just say it (hopefully stating the reasons, such as that the hiring process is imperfect, but the company can't devote infinite resources to it); after you did that it's completely fine to ignore further inquiries.