Upvoted and agreed, that's a reasonable complaint. Can you provide sources that illustrate the absence of correlation after dividing the dataset?
I haven't yet, although I did find this publication from Boston University positive correlation between increased gun ownership and increased non-stranger homicide rates: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4167105/
The post also questions how studies like the one you linked are measuring gun ownership rate. Every reliable study uses % of suicides with guns as a proxy for gun ownership rates. RAND notes the same thing: "A fundamental limitation for all of the studies is the lack of direct measures of gun prevalence. All of the authors use FS/S as a proxy for gun prevalence" https://www.rand.org/research/gun-policy/analysis/essays/fir...