I see this a lot among non-tech folks, who have a pretty thin understanding of the differences between "code" and "an agent". But do you see this among tech folks as well?
Your S3 case tho I think is a bit misplaced. You're right that if all your keys are configured correctly (API key, S3 key, etc) that a script to do that is like 5 lines in Python (once you get your venv going or use uv to setup the project lol), but tell an agent to just do the thing, and it will make sure that your API keys are in place and that you have access to the S3 bucket you're trying to write to and that the whole thing is in a venv, and then just report back that it's done.
Is it wasteful? Sure. For years I used to feel that way when I saw someone using a messaging app to message a friend across the hall in a loud room or when I saw someone taking a phone picture of their computer monitor and sending it. In the former case your packets are literally going from your phone to a central server and then onto someone else's phone in the same room. But, well, convenience wins.