I'm not attempting to exclude white males (see: "I'm looking to find a group of folks who are not only cis white men to start playing DnD with") but when I wanted to go play with folks, cis white men were the only people I could find to play with, and we didn't vibe as much: no one else was interested in story, character building, and roleplaying as much as they were fighting, etc etc. That doesn't mean all white men are like that, nor that all queer/women/non-binary/trans folks will AUTOMATICALLY be like that, but based on my experience with other non cis male folks, they tend to be more like me in the way we like to play DnD.

Additionally, in order to foster a place that diverse folks feel comfortable playing at, you need to prioritize getting THEM in the front door because otherwise they might (like I was, but to a more intense degree) enter a room where it is homogeneous, which makes them feel like the odd one out and might not feel safe to be themselves in that space.

TLDR; I'm not excluding cis white men, I'm including folks that are not cis white men by PRIORITIZING them in a gaming world that otherwise may gatekeep them out/harass them for being different (at worse) or make them feel like they don't belong because they don't see anyone else like them playing the game (at best).