When Genshin Impact launched in 2020, the state of the guides was rough. The official wiki was out of date, the big sites were full of SEO-bait 'Top 10' posts, and the actual theorycrafters (the people running damage calcs in spreadsheets) were scattered across a dozen Discord servers.
KQM started as a place to put what that community already knew. It grew into the biggest Genshin guide site on the internet, not by outspending anyone on marketing but by being the site the theorycrafters themselves used and recommended. Four million page views a month later, it's still community-run.
"Built by theorycrafters, for theorycrafters. Everyone else just gets the benefit."