Just checking in here, to see if I’m off-base. At Gamma distribution - Wikipedia, somebody changed the \text{Gamma}(\alpha,\beta) parametrization to \text{Gamma}(\alpha,\lambda). As I pointed out in the Talk page, both BDA3 and Robert’s The Bayesian Choice use the former.
Would I have any support for changing it back the way it was?
By all means change it back. Lots of YouTube videos would be obsolete otherwise 
The last time I tried to correct the Wikipedia page on “Dehydration” they accused me of vandalism because they said major textbooks endorse hyponatremic dehydration which I said didn’t exist.
But I’ve successfully made corrections in statistics articles like the Wilcoxon test, which someone claimed was invented by a bird scientist 20 years after Wilcoxon, Mann, and Whitney invented it.
We all have to look after the commons. Against people who disparage Wikipedia (because of what they hear in right-wing media) I emphasize how I often rely on its many excellent technical pages during my workday. β is back, at least for now.