If you're going SO/Common IO, yes, the Rage crash can be dangerous.
On a tricked-out Invuln/SS build with Incarnates? Nah.
Not even slightly.
Again, look up thread for the build I "double dog dared" someone to tell me was in any way dead meat on a Rage crash.
And again, I seriously doubt needing to eat an occasional Inspie is THAT huge a detriment.