The Megawad Club (even if you don't read a single post in the thread and consider all of that to be banal garbage) justifies its existence simply by getting people to actually play Doom. A lot of stuff in the Doom community gets lost in the shuffle or only played a single time and then forgotten and anything that gets people to either revisit old content or actually focus on new content is a good thing. (I would have never played Interception or Hadephobia or Realms of Chaos if the Megawad Club didn't highlight them.)
Also as an aside: there is this song in the Madoka film about a cake that goes like "Big cake, round cake, right in front of me. Who could the cake be? Is the cake *person's name here*?" and someone who I'm not going to name came up with a memfis parody response that goes "No, it's not me. I'm just shitposting, you see. The number of times I've failed out of college due to anime is three." and now I mentally hear memfis singing that every time I read one of his posts. I just felt the need to share that with you memfis.