So, to provide some context, I've been daily driving Linux for around the past 8 months. Recently, I decided to get a new computer. Now, right now, the specs of the computers don't really matter but I decided to give the old computer to my 12 y/o sister, who's basically never touched a computer in her life except playing some games I have. I installed Linux Mint on there and gave it to her. All she does on there is play games on Steam, and use a browser, and sometimes view images. And she never once asked for technical support except once when I had to help her get Roblox working on there with Sober.
So yeah, she's been using a computer for a month and didn't need basically any support. Kinda proves that nowwadays Linux 100% can be used by somebody who, hell, used only IPhones and had no idea what a file or a program was.
TLDR: I got someone who's never used a computer to use Linux and they had almost no problems