Developer installs 84,000 Firefox extensions

This stress test of the Firefox architecture exposes both the resilience and the severe performance bottlenecks of its extension management system. Scraping the entire store revealed that 34% of extensions have zero daily users, while many others are AI slop or phishing attempts. Force-enabling the full dataset caused the browser's extensions.json file to balloon to 189MB, resulting in a 39-minute wait for the first frame. The experiment identified specific UI performance bugs, such as the Add-ons management page taking six hours to load. While modern hardware can handle 84,000 extensions, the browser becomes functionally unusable.