People _say_ that to acquaintances, to coworkers. Just like they stay positive in the workplace and a bunch of other fronts people keep up as part of work life. Your job at work is to sell yourself and your skillset.

With people you talk with honestly outside of work YMMV but I've never seen that as a legitimate thing except with naive people who ended up regretting it. I've only seen people being happy with it when they were already underpaid, unhappy with the culture, or forced to work absurd hours to keep their jobs.

> a new exciting opportunity

You mean a salary or title increase? Yeah, that's in the GP's comment.

No, like a project or team you really want to work on for any number of reasons other than salary or title.