We're not talking about running massive amounts of extra boost from the blower to cause TIP collapse, and extra couple of PSI has been known to cause it. All it would of taken to resolve this problem was a few metal supporting rings built into the TIP.
I don't personally think it was designed to be as good as it could be, which in my opinion is a design flaw. Inept designers? Maybe. I think things should be designed to withstand far more than they are put through on a day to day basis.
Anyway, you have your opinion. I have mine.