Ridicule can absolutely produce resentment, no doubt about it. It can cause workplaces to become toxic, cause people to shut down (or worse: cause people to _learn_ to shut down), cause people to cope in unhealthy ways like projection, bullying, etc.
However, consider that _satire_ is, fundamentally, ridicule. And it's very public (or at least intended to be). Often satire is one of the only ways that unaccountable power can be brought to account, or institutions which have overstayed their utility can be mobilized against.
It really depends on who's the butt of the joke. On HackerNews, we're mostly anonymous as to our individual identities, but at the same time, any one of us could unwittingly end up playing the part of a public archetype, representing anything from a naive and harmless misconception all the way to a rotten, spiteful ideology that nihilistically boasts of its intent to destroy everything. Some of those ideas need to be challenged. And the people that amplify those ideas need to be challenged too. Bad faith and ill intent warrant ridicule, if not outright invective and contempt (not very often to this degree, but as a history enjoyer, I'll die on this hill). But sometimes even a genuine, bona fide contribution _ought_ to be ridiculed, if it stems from a misunderstanding which amplifies a terrible idea - especially if it's a terrible idea with actual supporters. In this case, the bad idea was _technocratic solutions to complex social problems._ The context is important too: it's HackerNews, which has some of the most brilliant minds, willing to share deep, detailed insights into complex, systemic problems, glomming onto some of the most simplistic, reductive tropes about human needs and behavior. It's a kind of paradoxical, radically individualistic groupthink, which, taken to its logical end (or even just considered half-seriously with a modicum of self-awareness), would smother the social and economic conditions for a healthy society. A small set of shallow, rote answers to complex human problems, coming from defenders of “second-order thinking.” It needs to be challenged in a way that an overclocked galaxy brain can't intellectually weasel its way out of.