Thanks, this is way more thorough than the links I was able to find / select from a quick search at the time.
If anything, I think I've accidentally experienced a lesser case of [Cunningham's Law](https://meta.wikimedia.org/wiki/Cunningham%27s_Law), where the veracity of the hypothesis is arguably pretty clear-cut and I just lacked the evidence, and the internet is obliged to correct/help in that regard!