After discussing with quack95 and realising that his friendship with Darwin_Uang was closer to Darwin bullying quack than them being friends, I persuaded quack to take action and to cut ties with Darwin.
Quack mentioned fears of worse harassment if he cut ties during this conversation, so I humbly ask that we keep an eye on the situation to ensure that quack feels safe in this community, as well as potentially any others Darwin begins to target.
All appreciated in advance, thanks.