Why do you care if Rosetta is around? It works great on laptops. If you decide you don't want to use it after letting it install, just uninstall all the x86 apps you tried, or don't launch them anymore. While x86 apps are not running, Rosetta has zero overhead outside of taking up a small amount of space on your SSD. (And in most cases, even runtime overhead is low - Rosetta is designed to try to translate the entire program on first launch and cache the translated ARM version for future use.)