A bit overdue, but it's probably time to close safetywikimania2021 on mailman. Or, if Trust & Safety finds it suitable, to convert & rename it to a more general purpose list.
I'm admin on the list, and the list has not been used since the conference other than for spam. I see I have a delete button, but it's not clear if that's the way to go, or if there are better approaches for this. There shouldn't be any archive to maintain.