My understanding is that LTSC with Windows updates turned off completely is the closest thing you can get to that o̶l̶d̶s̶k̶o̶o̶l̶ civilised, respectful, "My Computer" feeling.
The machine I use in this manner has never ever greeted me with an unexpected addition courtesy of the Microsoft enshittification department.
That’s cute that you think it is a single department. Unless, you think this department is like the some KGB level group that then installs politikal officers within every other department to ensure the enshittification is being the best it can be.
The machine I use in this manner has never ever greeted me with an unexpected addition courtesy of the Microsoft enshittification department.