Earlier quoted context omitted.
I don't agree with you, only for the fact that right now, in this age computers are everywhere, everything is digital, it is not luxury to learn how things work, it's survival, it's not expendable time, it's professional time
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, educ…
But eventually they will be old enough to require an email address, so should I just let them use Gmail and stop worrying, or try to have something up and running until then? At least protect them from the data kraken until they can make their own informed decisions about that. But then I'm not just responsible for my email, but my whole family's email. What about 30 years down the road, when they long moved out? Am I still gonna sysadmin my family's self-hosting galore when they finally have kids on their own? Is it even still possible then? At least for mail it looks like when it's growing over my head I can just sign up with some mail provider (that hopefully values privacy) and let them handle that whole BS.
It might not even be worth it anymore at some point though, if basically everyone else you communicate with via mail is on Gmail. Then Google already has all my email as well.