@Finn dAbuzz,
I take a loose n informal attitude toward it, Find Abuzz.
If u tell him the reason for your doing it,
then he has the
opportunity to
silently re-consider his misconduct.
For some, I 've just flipped the switch, as u put it.
I have not taken anyone off "ignore user"
but when someone else has quoted him,
I have had occasion to comment on the subject matter.
It is not necessary to address him, personally.
David