I just had to rotate numbers and get issued a new card recently after my normal replacement one didn't show up in the mail. The teller at my bank said they had dropped embossed cards because no one took rubs of cards (besides people stealing them) these days and that was the reasoning behind having embossed cards in the first place.
Don't, go learn past technologies instead. People leaving school for tech in 10 years likely aren't going to have stood up servers and configured services. We'll be lucky if they've used anything that isn't a web gui on a large cloud operation. Rad Hat has already signaled it is going in this direction by tossing out their EX300 exam in favor of the EX294. I believe we will continue seeing such a trend going forward. There's going to be a growing need and shrinking availability of competent sysadmins over the next 10 years if I had to guess.
Because they pay for the testing. A restaurant will not (it would serve no purpose to find out 1-3 days later that someone had covid.) Furthermore the people working on films are employees of a studio that are contractually required to uphold the measures they agree to or they can lose their jobs. A restaurant has no such agreement with their customers.
"Linux has systemd" and that's why the author didn't select it supposedly. I hear this line of thought from people that use FreeBSD often, although I suspect if you ask many of those people why systemd is so horrible you won't actually hear a legitimate (and still relevant) reason from them. I suggest anyone that thinks systemd is terrible and doesn't spend lots of time in Linux to watch this presentation by Benno Rice.