I like how they conveniently drop the fact that they have a test (that they can sell) for the fake DNA that they created :)
I don't think that this will in any way invalidate DNA evidence any time in the near future. Besides, I can't imagine anyone taking the time to prepare or purchase replicated DNA except for high-profile crimes.
Also, as a former Bio undergrad, I'm pretty sure I couldn't pull something like this off, lol. Maybe that's just me