So as presented it *sounds* like the typical respondent thought they spent about as much time as it saved and the numbers were fairly big.
I'm skeptical that a survey of self-reported experience would manifest that way. I wager that some said 9 hours saved with barely anything needed and some said 9 hours of fixing the mistakes and no time saved, and that instead of '16 minutes per week', you just have slightly more people annoyed by it than enthusiastic about it.
My guess is that it wildly varies by the job and situation. People for whom it works badly for are looking around and wondering what the hell is wrong with the people advocating, and the people for whom it works are amazed at the time savings, and given the current hype the former people are forced to do it anyway, even as it is terrible.
For example, a discussion arose where developer mentioned they could make a quick tool to take care of something that was likely to be an issue for users if folks wanted it. An executive declared "no need, I just had Claude make the tool for me in like 2 minutes, and I'll share with everyone". That executive felt *incredibly* empowered, they didn't know how to code and they used the tool and the result of the tool in the AI generated sandbox looked right. Then folks tried the tool and it failed horribly because it didn't have any actual clue about the technology to manage, it managed only to make a tool and sandbox for it to demo in that was consistent with the desired narrative, with no whiff that the results had no relationship to the documentation site included in the executive's prompt. Further, if it *had* worked, it would have broken a number of security mechanisms based on how it *tried* to do things. However, the executive would never feel the consequences, they unleashed their 'awesome tool' and the grunts had to clean up the mess and bringing that back up to executives to ask them to stop doing that stuff is a very risky move employment wise, and they'll not believe you anyway, it's just a conspiracy to keep our jobs after all...
Even when it is being reasonably useful, it's annoyingly prone to mistakes, randomly screwing up even if it's being asked to do the same easy little thing it has done successfully the last 12 times in a row in other contexts. Leaving you feeling a bit gaslight as you see the internet gushing about how unbelievably impossibly good Claude Opus 4.6 is after you just spent a week using your work's budget on that premium model to see if at least *they* are on to something and still finding a pretty annoying experience while Anthropic is crowing that they have all but finished off the job of software developer.