As someone in operations, totally this. Consistency is the biggest thing.

I've worked with plenty of wizards that can figure anything/everything out, but these deviations have a hidden cost.

The farm of resources no longer behaves like cattle, it's all pets - with their own identities, personalities, etc.

Containers abstract most of this away, a simple runtime and any host can be just like another with a tiny amount of automation.

We get things like scale from this, but if it 'works on your machine' but not ours, we're no further.