Melvin capital is a market maker, it's in the list at least... You might check yourself before acting so high and mighty. 1 is the reference for wikipedia. 2 is just another source in case you doubt. By the way, Citadel is also on that list. Retail did do something to Citadel and Melvin... so wrong on both counts.
This entire GME WSB thing is a bunch of people wanting to feel important. That's why there's so much high-and-mighty talk even though the facts of the matter are..pretty boring.
It stops being boring when brokers start directly interfering with the volume by changing what traders are allowed to do in the middle of a trading day.
1. https://web.archive.org/web/20070228050751/http://www.alphat...
2. https://www.level2stockquotes.com/market-makers-m-list.html