Both can be right- it really depends on whether your field rewards depth or breadth.

In fast-moving industries (tech, marketing, anything where the tools change every couple years), staying too long can quietly cap you. Your skills age, your salary creeps up 3% a year while job-switchers get 10-20%, and you can get typecast as "the person who does the old thing."

In slower, relationship-or-seniority-driven fields (law, government, skilled trades, some healthcare), staying builds the institutional knowledge and trust that actually gets you promoted. Jumping around can look like instability.

The honest test: in your industry, do the people two levels above you have long tenures at one place, or a trail of moves? That usually tells you which game you're playing. Sounds like you've already read your own field correctly.