Does it need to be justified just because it is old? All the new build systems are cool for some cookie cutter 2019 webapps but for anything more I don't know o

Does it need to be justified just because it is old? All the new build systems are cool for some cookie cutter 2019 webapps but for anything more I don't know of anything else as easy to deploy, setup, and comes with so many plugins and wealth of supporting information. Just seems strange to have to justify something that "just works" for so many years. It isn't even really "old" compared to many tools you use every day.