My younger colleagues have not experienced they need to play and upgrade their systems.

Swap? What's that? Network stuff? Huh? I have wifi.

They have a laptop, a.good one, and that's just it.

And while security should always have been a thing, the chance that you write an application accessable on the internet is much higher today than 10 or 20 years ago.

Beside that, there a much better tools available and easier to use than ever before. Building a whole platform is possible with a small team.

Building a highly scalable self healing zero downtime system is basically gifted to you when following modern practices like good java frameworks (magic) and k8s