Too many variables.
How many are daily driven? How many are just dyno queens?
There are too many scaremongers about. My car is running more than the "safe" limit & its fine.
Back when i first joined the limits were 350 then 370 then 400. If its mapped right, installed well & you maintain it well then it will last. If not, like any motor it will blow
Don't listen to the likes of Alberto either, its hardly surprising he has issues with his driving style