The double slit experiment has been duplicated enough times that it is considered experimental fact and the study that you cite (which I do not believe exists as a peer reviewed paper) would have to be replicated a few dozen times before refuting superposition and entanglement of particles. I'm not sure where you got your info, but I would bet money it wasn't from a Physics book/site/reference.
The most recent experiments that I have studied are confirming the Heisenberg uncertainty principle like never before. We now have data supporting charge-parity violation, in which quantum time reversal has been directly measured and scientists have successfully quantum teleported an electron over 88 miles. From a practical standpoint, superposition is so thoroughly proven that quantum computing has leveraged this unique facet of the particle for the last 20 years. I'm not sure how anyone looking at the facts could possibly deny superposition.
I AM is all that is. Everything else is malleable.