If you are using standard oil, a turbo can indeed break it down faster - LOTS of heat...
But I have a Saturn Sky Redline, and use synthetic. I get 9,000 to 10,000 miles per oil change. Saturn says you MUST use synthetic with the turbo, but says not to change it until the on-board computer tells you to. (Despite the service manager of the long-closed dealership telling me I should change it at 3,000 anyway. He would if it were his, he said...)
I can’t imagine why the dealership would say you need to bring in your car every 3,000 miles for an oil change. :)
I use dino juice in my ‘91 Miata (normally aspirated, of course) and change it every 5,000, and I sometimes wonder if even that might be a bit much. OTOH, the car is still on its original engine and still running pretty well at 296,000 miles.