While not my trope, I've never understood the utter stupidity of this cliché. Oh sure I understand the concept of hazing the newbies, and the protagonist curse is a thing. But I've seen this event used on everything from literal children to visually grizzled veteran mercs.
and in almost every case there is a strick policy against fighting in the guild which causes the guildmaster to someone to restore order and dole out punishment detail.... it's just sush a dull and mindless trope, and I hate it. It just sets the tone for the MC to be continuously harassed for stupid reasons.