Right, they just need an expert to install things for them to get started... that's not simple enough for people who don't have an expert they can call.
Why could anyone's auntie do it when they needed MS-DOS or Windows installed in the 90s, and they could not do it any more today? The 'expert' being a neighbour, the little nephew himself, or whichever friend of the family.
The world outside of Linux has moved on from people needing experts to set up computers.
Today we just tell auntie to buy an iPad.
Most people are using their (personal) computers for browsing, maybe an email client if they're not using one of those web-email abominations, the odd bit of word-processing and watching movies/listening to music. Linux works just fine out of the box and the install is substantially simpler than anything I've ever seen over in the MS world.