The secret of Linux is, if all your hardware works, it's actually easier to use for casual users. Most people nowadays use computers for web browsing and maybe playing media and light office tasks. A Linux Mint setup will have everything you need for that either preinstalled or ready to get fun the software store. If you don't need anything else, then it gets it of your way and just works. No viruses, little danger of malware, no crud to uninstall, no Microsoft account, no nagging apps, no ads, no attempts to upsell to paid cloud services or Pro, and no AI.
The problem arises when you want to go beyond that, and there's no obvious path ahead,v then people not used to the Linux way of doing things may run into trouble. But 90% of users, if someone sets it up for them, will do fine.