The problem is, that no operating system “just works”. It also highly depend on what the person wants to achieve, and if there are any pre experience with computers or even relying on existing software or specific hardware. My recommendation is not to tell people the illusion of “just works” and be honest upfront. People should learn how it works, what to expect and if tradeoffs, time and resources are worth it.
Same is true for the other way too. Does Windows “just works”? Especially if someone switches from Linux to Windows.
Rather, we should teach the reasons to switch and encourage that decision. In example why it matters to have control over your system, rather than the company has control over it (MacOS and Windows) or why spying on you is bad (Windows). And encourage giving up something you are used to (and maybe paid). Sometimes its okay to use a program that is not as good as Photoshop. Sometimes its okay to give up playing a videogame you like (and maybe associated with friends playing that game with you). But most people are not ready to do it, because that is associated with lowering quality of life.
I switched in 2008 from Windows XP to Ubuntu. I know these struggles. And they are not over yet. This is an ongoing task between my brother and me too, and he was using the Steam Deck, but decided to go with Windows 11 with the recent build. It was almost there, but there is always a butt. I say, don’t tell people that “Linux just works”. No operating system “just works”.