Sometimes.
Even cold algorithms and coms protocols have a teardown phase.
Otherwise loose ends like half-filled buffers and outstanding packets can't be resolved. And the sudden cessation of a link is indistinguishable from a peer dying, or a medium failure.
You'd think that a technologically informed culture might actually tend toward more formal protocols of initiation and disengagement.
The problem for people seeking alignment, but who are emotionally immature and cannot negotiate, is that they err towards conflict avoidance.
Technology has reduced us all to abject fear of being "unacceptable" or "awkward". So we'd rather be brutally cruel than even seen as wrong.
[0] out next week
Insert rant here about bloat, deteriorationg user experiences, HN possibly turning into another little social network, the cognitive load of tending to notifications, of making the little numbers on top of inbox-icons go away
I think that is probably the underlying point.
From my own experience it is no longer 'Sometimes' but seems to now the rule rather than the exception.