Sure, using the Linux command line is optional. But these are commands I rely on every day, and you can benefit from them, too.
However, if you put a portable Linux installation on a flash drive, you can carry your own operating system with you wherever you go. Most of the time it is as simple as telling the computer to boot ...
MX Linux has been an absolute favorite for the last few months as it works under 500 MB of memory and minimal storage space.