I have app stacks that deploy a dozen containers in seconds because they are stateless and close to "functional" – just transformations over inputs.

I have app stacks that deploy a dozen containers over an hour because the orchestration takes time: signal the old containers to drain, pause for an app with a very long initialization time to settle, gradually roll traffic to the new one to let caches warm, and then repeat.

In both of these cases, deployment is a function of the application. There's nothing infrastructural that puts a time floor on things.