It's certainly not for everyday users, and I learned that within the first ten minutes ...
Use Windows Sandbox to safely install and test unknown apps in an isolated environment. Protect your PC from malware and risky software without affecting your system.
This process is called a clean install, which is ironic as there's nothing particularly clean about it: Microsoft has enshittified Windows Setup.
PCs, for a long time, had a bloatware problem. The major PC manufacturers—Dell, Asus, Acer, and the like—had a bad habit of including "free trials" of software like Norton AntiVirus on new devices.
During the installation of Windows 11, an internet connection is required at the OOBE stage to successfully complete the process of setting up your system. That said ...