It's been a long-standing tenet of Wikipedia (and,
in my view, a
crucial and necessary one) that contributors should leave their
political opinions at the door. Accordingly, any actions designed to
divide the editing community into political factions can be seen as
unhelpful.
Where is this "long-standing tenet" defined? NPOV, for
example, depends on
different points of view, including political opinions, being given space
consistent with their level of support.
Consistent with their level of support in the world, yes. Consistent with
their level of support among the Wikipedia editing community, no. There is
a crucial difference.