This seems like more of a dig than a genuine question but assuming it is genuine... Here's what I'd say.

Where I work, time in the job doesn't necessarily correlate with career progression. It is dependent on continuously demonstrating impact, contributions to grow people, and direction. Someone in industry for 10+ years may not be qualified because of how senior is defined here, and similarly people with less time in the job very well might be qualified.

I was lucky early in my career to get enough mentorship to be able to get to that point. Maybe I would not be considered senior elsewhere because I haven't been in the job long enough, but at this workplace I am an L5.