This has always been an issue with Gecko and the Mozilla codebase. It was a massive blow to the Mozilla community when Safari was released using KHTML instead of Gecko. Google then adopted WebKit (itself an evolution of KHTML) for Chrome, another slight for Mozilla. This despite prominent ex Mozilla developers like Lisa Melton, David Hyatt, Ben Goodger, and others being involved early on with Safari and Chrome development. Even Brendan Eich went with Chromium and not Mozilla technology for Brave.