I've never seen an interview process that HN (and Reddit and Slashdot and ...) didn't trash as "deeply flawed", "biased", "unfair", "unreasonable", etc. At some point, though, a company has to have some sort of process, and by and large what they use works for them.
It's always so much easier to criticize (as nothing is perfect) than actually come up with a better solution in real life. So anything where there's no perfect solution, people will endlessly criticize online, even though they themselves have no better solution, and what they criticize is not terrible by any means.
