Earlier quoted context omitted.
> you can plausibly make up the rest about what you actually did there. I would never do this, and if you would do this I wouldn't want to work with you. Maybe I'm a sucker, but I sleep alright.
It's not like the parent would have accomplished nothing in the 10 years. I think they are just talking about framing it in language palatable to the interviewer across the table.
GP was achieving what their bosses asked of them. It's just that it didn't align with their own professional goals of improving the product they work on.