You've got some amazing stuff in that article like people being told in some parts of the world that 6mm sets are only for infants, adults should be on 10mm, and in other parts of the world that 6mm sets are fine for adults. Personally I doubt it matters, but the disparity in advice is a worry. As is the lack of evidence on so many aspects of infusion sets.
Interesting that is says 90 degree sets have a lower infection risk. And that steel sets have a lower failure rate.