Surely for many of those present it may be a minor change but in reality during the process of change many users felt annoyed due to the change in the nomenclature of the operating system of our beloved Macs, as well as many others were happy for this change.
It really was something that came as a surprise since the name was not something we expected to change in the version after El Capitan, but Apple wanted it that way and from that moment until today We no longer have OS X we have our Macs with macOS.
Several Mac OS name changes in your life
Mac OS X 10.0 Cheetah, which was the "first" OS X was launched in 2001 and from that moment until today things have changed a lot. The first thing is the hardware itself and the equipment we work with, but it is something that continues to advance and has no brake. After this first version came Mac OS X 10.1 Puma and Jaguar and Panther and Tiger to get to Mac OS X Leopard, at which time Apple thought about changing the nomenclature of the name leaving out the "Mac" in front and remaining in OS X to dry.
Shortly after since 2012 with the arrival of Mountain Lion we stayed with that nomenclature until last year 2016 when Sierra arrived. This was already the first of the macOS that we have seen and that we will surely continue to see throughout the years. macOS Sierra, macOS High Sierra and today macOS 10.14 Mojave, what does the future hold for us? Well, only Apple knows.
They removed the 3d Dock for that ugly one