Personally, I'd have thought a blocker network sync issue was far more critical (and difficult to debug) than a DX crash.
But it is what it is.
I backed to Alpha for SC, and I'm happy to wait. It's a bonus for me, as my entire being is inextricably tied to ED, ever since I unwrapped Elite for the Speccy on Christmas Day back in the late Eighties. I owe the pseudo-auntie who gave it to me a debt of immense gratitude.
So, yeah, whatever.
I can imagine that the problem of people getting frustrated isn't so much with the initial KS funding amounts.
SC's model has been to sell incredibly high priced items as heavily as possible.
There are people on there who have spent many many thousands of real dollars on non-existent digital spaceships. The more money they take, the larger the expectation. If you've ponied up a couple of hundred quid for the ED Alpha/Beta, and it's 3 months late, fair enough. If you've paid $5000 for ship after ship after ship and it's delayed from December, to May and possibly again - you're likely to get a little skittish.
It's a model I don't like, as it is assuredly pay to win, and it is in no way cheap. $120 for a single ship you can't fly for at least a year? That should get you 2 or 3 AAA boxed titles!
It's likely also symptomatic of the US bias in the customer base.