If your only focus is spending, yes.
Otherwise, a "not a big deal" dev account can quickly become the door to your whole org for hackers
RDS databases, DynamoDB, and S3? Much less so.
That's my point: I'm not the one setting it up and using it, it's the devs using it
And I'm not expecting them to know how to navigate a cloud provider securely.
So it's either setting the dev account with all the required guardrails in place, or using "local cloud" on their computer
If your only focus is spending, yes.
Otherwise, a "not a big deal" dev account can quickly become the door to your whole org for hackers