The lockdown mostly worked, because panem (food) and circensis (movie-streams and gaming) were continuously supplied. But, yes you have a point, the species behaved remarkably well under stress. But then, we also have a lot of social implants now too (cellphone-panopticon) and crowd-sourced anger-management.
Also its been half a year, since a angry crowd stampeded into the capitol building of a nuclear power.
So they either have an abundant source of nutrients that has not been depleted for their entire evolution, or they are not highly developed, or they have developed aggression.
For example some ficus grow over other trees, and later the roots cover the old tree until it dies. They don't eat the other tree, just "reuse" the wood to have an initial high place to get light. I coudn't find a nice link about this, but here are a few photos https://www.flickr.com/photos/rodolfocol/15129590163/in/phot... https://www.alamy.es/brasil-el-pantanal-parasito-higuera-fic...
Include in that the fire-economy of some forest and savannahs + the animals marshalled by these ecosystems and "peaceful" nature stops looking peaceful
Thus ever more potent tools are handed out to avoid confrontation with the "overcome" animal nature - and once that equation reaches the end of the line (easy energy and resources exhausted), a nearly unchanged animal with exponential power tools in hand, reverts to tribalistic warfare. Nothing recovers from this.
The greatest damage done, is the lie that life can learn and change, which never holds up under stress. The most valuable achievement to escape the filter, is investigate our nature realistically and apply controlled technological crippling, while testing the tools to calm the evil spirits of our nature, even under stress.
So technology is the problem and the solution, if applied with a real effort to understand humanity, beyond the "I wish for X and by the magic of wishful thinking it becomes reality instantly". Its hard work - similar to somebody diagnosing ones own mental limitations, and building a limited operating system for that crippled system. In a way- its the ultimate hack.