This is because it’s emulating Reddit, and operates in the same ways, cultures, and countries as Reddit does.
From bad mods and bans, to niche communities, to the brigading and politics. From rating posts, avoiding discussions, and responding with meme floods.
Lemmy will merely reproduce all the negativity, politics, and everything else we hate about Reddit …and it’s already doing so.
[EDIT: As you can see in the comments, full of people agreeing Lemmy will also be toxic in similar ways].
So the Internet has a strong divide between male and female users. In what sites they use and where they aggregate. Women-coded websites like geocities, imgur, and tumblr were some of the first to be acquired to be monetized. Because the Mormon church had shown how effectively women could be leveraged for ad revenue and marketing. When those places became compromised women moved into the male coded places and it changed the demographics. Making those places the next targets for purchase and control.
Also - women coded does not just mean social media. Yes FB, Insta, Tiktok ect are feminine focused but that is for the bulk of the population. Not strong internet users.
There are some female vestiges remaining. But they’re newer and mostly monetized to generating smut.