Fair enough. Quality components are something I have control over. Personally, I'm not going to lose my drone due to something I can prevent. Not knockin' yall for using what you want, just voicing my .02.
In the case of Spark I am pretty sure the reliability of this cable is already better than the wifi RC connection we have in CE mode here in Europe anyway!
On a serious note: I use cheap Ebay/Aliexpress cables all the time for different purposes, no problems so far.