This is a body of research going back to at least 2008, usually referred to
in the literature as "Cortina’s theory of selective incivility". It
categorizes types of selective incivility, and has data showing that
selective incivility causes marginalized groups to leave organizations.
"That is, 'generally' uncivil words and deeds make no overt reference to
gender or race (or any other social dimension). Nevertheless, incivility
may sometimes represent a covert manifestation of gender and racial bias
when women and people of color are selectively targeted."
The most frequently cited study is Selective Incivility as Modern
Discrimination in Organizations (2013):
I'm aware that some moderated accounts for this list have been under
moderation for a very long time, and in practice some recent posts
from these accounts took so long to get through the moderation queue
that they became irrelevant.
Are there any views on having an amnesty, and removing all
restrictions? This would be a nice gesture of good faith and reduce
expectations on current list mods.