The only parts of Servo that could realistically be ported into Gecko within the next couple of years have already been ported. Servo's DOM engine would be the last major remaining piece, but that would be a very, very long-term project.
According to your link, developer tools and internal tooling/infrastructure teams took a cut. The effects will mostly be indirect.
Internal tooling and infrastructure teams that work on Firefox are still Firefox teams though. If you work on the build pipeline you still count as a Firefox development in my book.
According to your link, developer tools and internal tooling/infrastructure teams took a cut. The effects will mostly be indirect.