Mozilla will change the policy for add-ons on December 1: https://blog.mozilla.org/addons/2021/11/03/add-on-policy-changes-2021/ https://extensionworkshop.com/documentation/publish/add-on-policies-dec-2021...
By my reading, the parts that may apply to us have to do with a privacy policy and possible consent form. From the blog:
If your add-on collects technical data, user interaction data, or personal data, you must show a consent experience at the first run of the add-on.
Most add-ons require a privacy policy. For add-ons listed on addons.mozilla.org, the policy must be included in the listing in its full text.
I don't think the Snowflake add-on currently has a privacy policy on addons.mozilla.org.