I'm really quite… perplexed by how so many people seem to be happy with Perplexity. I have tried it a number of times and it always hallucinated a ton (especially the stuff where it provided "sources").
It's well behind Kagi (which uses a bunch of sources for results and new models for quick answer or assistant). Perplexity is even well behind other competitors like chatgpt
Preference doesn't have to be based on anything, but providing misinformation that is easily verified is not that common on HN. And Perplexity Pro is different than vanilla Perplexity.
You're right though it seems that they don't just use bing + their own crawler, but who else they use seems to be community speculation.