Cynicism reigns supreme on social media right now, and HN comments are a type of social media.
There is also a deeply engrained “us versus them” mentality baked into a lot of the anger. The SVB scenario has more people identifying the “us” part as taxpayers (who would presumably foot the bill for backstopping losses) and the “them” part as VCs and investors.
Interestingly, if this was rephrased as an “Ask HN” post where someone was concerned about their next paycheck because their startup’s bank failed, I suspect the sentiment would be completely reversed. The more relatable the story, the kinder the comments.