Servo is 14 years old, it's hardly a new project. Ladybird has come much farther in a shorter amount of time. The issue has always been Mozilla not being focused.
That's hardly a fair assessment when large parts of Servo were mainlined into Firefox years before Ladybird even existed. Stylo, their CSS engine, landed in Firefox 57 in 2017 replacing ~160k lines of C++ with ~85k lines of Rust.
Servo wasn't originally really intended as a browser competitor. It was the flagship experimental project of the Rust language to replace parts of Firefox with memory safe implementations, which it pulled off in style. It's only recently that people have picked it back up as a browser project, years after Mozilla killed the development.
It’s also no longer a Mozilla project.