Look at the trends. Brave has barely 3 years since it became usable enough to be a daily driver, and it has already 20-25% of Firefox market share. Firefox is constantly shrinking its user base, Brave is growing 40% YoY.
Most global browser share numbers I could find bundled Brave into the "Other" category - this was the only one I found that broke it out separately: https://kinsta.com/browser-market-share/
