Dark Energy doubts

At https://phys.org/news/2020-01-evidence-key-assumption-discovery-dark.html … new evidence that a key assumption concerning the discovery of dark energy is faulty. We might even ask at this part if dark energy was really discovered – rather than an idea that was repeated and became de facto by due process. Anyway, here we have one idea of why it might have flown in cosmological circles – based on an assumption that might turn out to be an error. The study is published in the Astrophysical Journal (January 2020)  but can be read at the pre publication web site https://arxiv.org/abs/1912.04903.pdf