This is called networking and I don't think it's going away anytime soon.
I'm a consultant and I get along very well with the director of engineering where I'm working now. When cuts happen, I won't be the first to go. The first to go will be the people that have no relationship with upper management.
Career advancement isn't all about the job that you do.
"Basically I'd hope we can prioritise other ways to create trust than building personal bonds (TBH, being good at one's job for a decent amount of time seems plenty enough to me)"
Being only good at one's job is a great way to keep your current job and position forever. If that's what you want, it's fine. However, if you want to get into management or advance, you need to get noticed and build relationships so your potential can also be noticed.