> Until there is a version of Linux where you don’t have to open the console

This is already the case from the Grandma use case, i.e. nothing more than a web browser and maybe Thunderbird and an office program. The terminal issue doesn't come up until you start getting into people who know just enough to be dangerous (myself included).

The larger issue is that computers with Linux pre-installed are (within a rounding error) not a thing, and thus Grandma can't go out and buy one. Telling her to install it on her current computer makes about as much sense to her as asking her to flob the nerfwhizzle. And even if she could, would she place her bets on a (to her) completely new computer system? Not without help or solid recommendations from trusted sources.