Okay. Then in my opinion, yes, it's probably fit for purpose right now. But as demand for blockchain analysis services increases, major fungibility issues will start to pop up. Of course this won't be provable until it actually happens.
Development is still going on. If DASH is still alive 2 years from now it won't be the same as it is today.
My point was that these issues are unresolvable short of DASH abandoning the bitcoin codebase and adopting a more opaque block chain.