Ask HN: Company not responding after 6 hrs interviewing. Can I name and shame?

I had 2 telephone interviews and one timed Hackerrank 4 hour challenge which I aced (all green ticks). This was a significant investment on my side having to take time off work each time. After all this, the company has just gone radio silent. I'm mature enough to understand this is a rejection, but I find it unacceptable to not drop off a polite rejection email and it is becoming increasingly common in tech. This is a very wealthy small sized company with a dedicated HR department and not some small startup struggling on a shoestring budget.