I had to walk a classmate through how to install a program in Windows. You know, go to the website, hit download, wait for it to finish, next next next, etc.
We're two weeks away from getting our diplomas. In IT.
If you know how to build a computer, you're already ahead of 50% of people going into entry level IT support.
I've had enterprise grade desktop servers with fans plugged into the wrong fan header (pump vs case fan, the pump header runs at 100% and its noisy AF), same problem for multiple of the same model. $3000+ computers and the people making them cant RTFM (they included the manual)
I was 'two weeks ago'-years-old when I realized that maybe setting my AIO pump to 100% instead of letting it be throttled up and down like a CPU fan might be a good idea. (I was installing it on a motherboard too old to have a "pump header;" it only understands CPU_FAN and SYS_FAN.)
Considering that my previous AIO worked just fine for seven years being treated like a fan -- and in fact would still be in use if not for it failing to fit in my new SFF case -- I'm still not actually sure the difference matters.
package managers technically exist, including Microsoft's own winget, and if you're on windows they're a decent choice, though they do come with a multitude of issues
there's even a decent ish package manager GUI called unigetui
how would it change, netbooting still requires significant infrastructure that only nerds and business have and almost no phones have support for USB mass storage device emulation (technically not emulation) so it still needs a USB drive or DVD.
edit: misread the previous comment, didn't see program