Secondly, it's an important biomedical advancement made by citizen scientists.
Is it important, and is it even an advancement?
They didn't come up with the idea and the effect was already known.
Their idea was inspired by a patent filed in 2012, claiming that if you mix insulin, Ce6 and saline to someone’s eye, their retina absorbs much more light and they can see much better in the dark. The patent also mentioned that instead of insulin, you can use a substance called dimethlysulfoxide (DMSO). The Science for Masses guys thought “Why not use both?”.
So their sole contribution appears to be the idea of using both insulin and DMSO (for no readily apparent reason and probably to no actual benefit).
Thirdly, there's an organization [scienceforthemasses.org] which is a nexus for citizen science.
Said "organization" appears to be two guys with unknown qualifications and "our fair share of body mod tools for when the mood strikes us." Their "paper" looks more like a blog post to me, and their "tests" were subjective at very best (something they do at least admit).
I'd half expect their next "paper" to be a study on the effects of downing a glass of diet coke after eating a packet of mentos.
The test subject's eyesight returned to normal the next day.
Yeah, so far.