There's no way of knowing how a person new to LrC will approach it. Some will be organized and it will go smoothly, and others will just start somewhere and make do. Some just can't deal with the jargon and complexity. They will devise their own kludgy methods, and then it could go wrong. I've seen it happen back in the days of 3rd party antivirus software. Some folks just want the screens to go away, and click haphazardly until they do.
If someone new to LrC followed a good tutorial or got personal help from someone experienced, it will go well. But most people don't want help like that. They want to go at their own speed and figure it out themselves. I've seen it time and again. They want to be left alone to play and learn and figure it out on their own.
They want to edit photos, not fool around with catalogues.
"A good start is paramount and I think the first several steps cover that." - yes, agreed.
Once the foundation has been built, when things go wrong or the user can't figure something out, the best is an AI app instead of a hierarchical help system. Type in what your issue is and get an app-specific answer right away. "My Develop module disappeared. How do I get it back?" Much better than searching in the menus or help.