I've had mine since December 2016, and the only thing to be replaced is the ESC which Modelsport did within the first couple of weeks.
Apart from that it's stock and still going strong on 2S, with just the bodywork a bit scarred!
I think a lot of it is more to do with peoples mindset that "it's cheap so I'll drive it like an idiot", after of course sticking the fastest motor in it they can.
Also how many bog standard Yetis are out there for instance, from the threads on here it would appear they get upgraded just as much .... and at nearly twice the starting price I know which strikes me as better value.