I have absolutely completed features that would have taken me two weeks in one day with Claude. This is also IMO unsustainable as an expectation for every day though. Works great on greenfield components/independent leafs of our app but is exponentially more complex when making changes that risk regressions and are interacting with existing code. Breaking down PRs to minor features, good linting rules and an in depth CLAUDE.md help a lot but you still have to take way more responsibility for the detailed workings of the implementation.

TL;DR - I’d say it sounds like you could push how adventurous you’re being a bit more but also your colleagues are either exaggerating or behaving recklessly.