I believe you about it having such a standard (we can call it presence of evidence or presence of suspicion), but not on it being right.
2) Preponderance of evidence makes sense on civil suits because they are kinda inherently simmetrical. Either A loses or B loses. We would probably do better in using the standard of evidence for, say, a traffic violation, in the case of social "lets get this guy fired and try to make sure he never gets a job again" -- might not be enough of a standard, but better
Which I believe it *has*, but absolutely should not have
(I'm not claiming that I have a solution for the problem, besides people individually waking up and realizing that it's a bad idea to rush to judgement. No amount of censorship or similar tactics could possibly solve this problem even if our benevolent tech overlords wanted to)
What do you think the highest and lowest standards of evidence should be for "social opprobium"?
And what is the maximum damage to ones life that "social opprobium" should ideally entail?