Even if you do hill climbs or hard driving, all you really need to do is ensure that the last 2-3 minutes of your drive are done gently. 2500rpm is enough to heat the turbo - it's in mid-range boost at that point.
That still raises the temps. Not as much, of course, and its probably gentle enough to not be overly concerned. Is an intercooler fitted? Intercoolers are reasonable at improving performance and superb at catching bits of turbocharger.
The turbo will probably be fine - I do like to err on the side of caution. I generally let mine idle into where I'm going and while I'm making sure that the vehicle is stopped properly, handbrake on, vehicle in park etc before I shut the engine down - the little checking I do wastes a bit more time and so the turbo gets a little extra cooling.
The way to tell of course is to put an EGT probe on the exhaust manifold. This will tell you what temps the turbo is being subjected to.
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