Volvo 2012 D13 - Several parts replaced

Hi everyone

We're looking at some trucks at a dealership. We have our eye on a 2012 Volvo with around 490k miles. It's had the radiator, Nox sensor and EGR Cooler replaced.
They have agreed to clean the DEF filter and possibly replace the clutch and clutch fan before releasing it to us.

Is it a good or bad sign that so many parts have been changed on this truck, progressive damage comes to mind.