address the fact that TPA-RFC-7 penalizes volunteers (tpo/tpa/team#41962)

policy/tpa-rfc-7-root.md

@@ -169,3 +169,14 @@ three methods for ending the membership:
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+
+# Addendum
+
+We want to acknowledge that the policy of retiring inactive users has
+the side effect of penalizing volunteers in the team. This is an
+undesirable and unwanted side-effect of this policy, but not one we
+know how to operate otherwise.
+
+We also realize that it's a good thing to purge inactive accounts,
+especially for critical accesses like root, so we are keeping this
+policy as is. See the discussion in [issue #41962](https://gitlab.torproject.org/tpo/tpa/team/-/issues/41962).