Whatever it produces still needs to be carefully reviewed and guided. Context switching as a human programmer is very hard so you need to focus on the same spec

Whatever it produces still needs to be carefully reviewed and guided. Context switching as a human programmer is very hard so you need to focus on the same specific task, which is harder to not switch to social media or IRL while waiting for it. And you're going to be on the same branch for the same ticket, git doesn't let you do multiple at once (at least I'm not set up to). Not sure where the productivity scaling would come from outside of rapid experimentation on bad ideas until you find the right one, and of course rapid autocomplete, faster debugging, much fancy global find/replace type stuff. I use it quite aggressively and I'd probably only estimate 1.5x on average. Not world changing because we all mostly work on boring stuff and have endless backlogs.