I have various friends who have made similar statements about food (everyone should cook meals for themselves), cars (everyone should do their own basic repairs and maintenance), homes (everyone should do their own basic home maintenance), keyboards (everyone should do basic soldering and learn a non-qwerty layout), accounting (everyone should have a budget and do their own taxes), gardening, fitness, investing, education, etc.
The number of people who can learn all of the skills that someone in the world considers essential is small. The number of people who can do all those things while having a job, kids, and a working partner is smaller still. The rest of us have to focus on a proper subset.
For me, every minute I waste learning how to configure my server is a minute I could have been playing Legos with my kids or riding my bike or sleeping.