It's not just in computer security, it's in almost everything. People hate friction, but they need it make good decisions.
What we really need is smart people creating well-designed eusocial frictions, rather than trying to mindlessly eliminate friction from all areas. But guess which thing leads to products that can be sold more successfully on the market?
As a user, I would love to get rid of curl | bash and use the OS package manager instead. This would actually be more convenient to me: I wouldn't have to hunt through the documentation to find out what was installed, where it was installed, how I can update it (or does it register its own auto-updater?) and how - or if - I can uninstall it again.
This seems more like a convenience for certain software projects who can't be bothered to interact with distro maintainers and instead want to circumvent the distro system entirely.
It's true in the real world too which is why even in secure buildings a person can often slip in by coat-tailing someone. Stopping every single person to check ID is cumbersome and slows everyone down. People have stuff to do.
Truly high security environments are zero-tolerance, which makes them annoying and expensive to work in. I've talked to people who have worked in US military and CIA/NSA places and a very meaningful amount of time is spent complying with security and jumping through hoops. Even with all that, stuff gets leaked and stolen.