I don't really agree
Sensible people take an interest in the tools they need for their work and learn how to use them properly. It doesn't matter whether it's a mechanic using a spanner, or a musician using a guitar, or an office worker using a computer. If you need it for your job, learn how to use it properly. This is especially true in the case of a computer where many people will be using one at home a lot too.
I don't think there's any excuse for not taking an interest in your computer's desktop environment and the applications installed on it. People are perfectly capable of learning new things if they have sufficient interest in doing so.
Of course, the simpler the thing works, the better, so e.g. people are likely to adapt quicker and better with a change from Windows to Mac than they are with a change from Windows to Linux. So this is not an argument not to continue improving Linux on the desktop. When Linux is reasonably easy for people to learn and use, people who aren't lazy/worthless/whatever will happily learn and adapt accordingly.
