Very basic tasks such as handling a
spacecraft on Mars? Are Linux based systems such as Steam Deck not completely user friendly? How about Linux Mint or newer distros such as
Nobara? Is limiting one's understanding of Computer to simple "point-and-click" and be happy with it in an age when technologies such as AI or Quantum Computers are rising reasonable!?
It seems you are misunderstanding what was posted. To be more clear.
The reason for #1 is extremely basic users whose primary use involves at best using a web browser for basic tasks such as checking email. For them a bare minimum UI, a web browser and the software center for package management.
Since linux is extremely flexible, it also works well for the extremely high level user who lives and breathes CLI.
For those in between, it becomes less appealing compared to an OS like Windows. The reason for that, is the likelihood of encountering use cases where the software center will not meet your needs, in which case, you will encounter tar.gz packages, dependencies, tons of commands, editing files with nano, etc. and at that point if you are not proficient with CLI, then you will have to pray that for the package you are trying to install, either has up to date instructions for their distro, or that the old instructions written for an older distro still works when copied and pasted into terminal on a newer distro.
This in no way implies that linux lacks the function for their needs, it simply means that the guided yellow brick world in the linux distros doesn't meet the needs of those users in the middle.
On the other hand, windows, while designed to be exceedingly easy to a point where steps have to be taken to get people to stop installing stuff.
For example, in windows, most programs can be installed via a simple exe file or they can be standalone and simply be extracted and run.
Beyond that in cases when an application is produced that lacks a straightforward setup process. For example, stable diffusion and various other AI tools. Since the design culture in windows is around automation and ease of use, in boiling things down to being guided point and click operation. Thus there are now GUI based tools that will take the application, and set up all dependancies and get it configured to bring it to a ready to use state, without tons of fidgeting with python or other stuff. Simply put, windows offers the advanced tools but the culture surrounding it allows for someone else to do all of that work for you and through the design, of windows, those automatons can work across multiple versions of windows, thus it satisfies the needs of a basic user who will just use a web browser, as well as the user gets 99% of their needs handled by basic double click to setup packages, and for the occasions when they need a CLI tool from github, odds are highly likely that someone else produced a GUI frontend for it or at least a batch file to take the guess work out of the commands. And for the more advanced users, who understand the system well, they have access to all of the GUI intuitive enhancements from 35+ years of development, while also having the ability to dig into the CLI if they want. For everyone in the middle, there is the full panlply of control, with the ability for hand holding without having to bed for it on a forum and wait days or weeks for a response.