If implemented correctly these tricks will still work on less expensive models delivering nearly identical value.
Today, a hefty amount of standard coding tasks can be completed with similar results to gpt astra using terra and a tailored harness around it.
Also the scale matters. One big, expensive session, with a frontier model paired with a dev-babysitter is ok. But make it a factory (kindergarden: few devs, many parallel streams) and you'll want to follow a strict protocol.