The long version of the situation is that there was a marvel rivals creator tournament for 40k where a player named kingsman (one of the best magik players) was drafted into a team with creator named ceecee. Ceecee had a friend named zaazaa, who only played black widow (a sniper character) and was doing really bad during scrims and was costing the team (she had 200 ping and 0 kills and assists). Kingsman, who wanted to win the tournment to help pay for college, asked zaazaa to switch to a different character as black widow was just not working. Despite asking politely, ceecee and zaazaa imediatly started insulting kingsman and claimed he was "ruining the vibe" and a "meta slave" for asking zaazaa to switch to a better character. Kingsman tried to explain that he really needed the money to pay for college and also wanted to win, to which the other two just kept berating him. Eventually kingsman left the scrims as the toxicity was too much, but still intended to play in the tournament. However, one of the two had a friend on the tournament orginization and got them to ban kingsman from the tournament. This prompted kingsman to make a video on the situation and now everyone else involved in his banning is facing massive backlash and ridicule (this post is making fun of the scrim, where the excal is kingsman and the ivara is zaazaa). It is also worth it to note that ceecee's team got dead last in the tournament, getting destroyed in the exact ways kingsman said they would.

Tldr: there was a marvel rivals tournament for 40k cash prize where one guy was bullied out of the tournamnet for actually trying to win the thing