Earlier quoted context omitted.
Author here! After receiving the C&D, the method with which I was getting the data was removed/patched (which I'm now noticing was not mentioned in the blog post...) I did ask them if there was any thing I could to keep it up and never received a response, and rather than playing a cat & mouse game of "now you don't have our branding, but you are scraping are data so here's another C&D" I just took it down :)
I believe scraping is generally ok - there's actual trademark law about trademarks, which is why you got a c+d about trademark usage, instead of a general 'stop what you're doing we don't like it' c+d. A good point of comparison is steam db (and other similar sites), which uses Steam public info to triangulate market info that isn't immediately apparent. https://steamdb.info/
> This third-party website gives you better insight into the Steam platform and everything in its database.
It clearly states that it's not affiliated with Steam and is a separate organization. There's also a further disclaimer in the footer of the page.
In contrast, the "Waffle House Index" had the Waffle House logo at the top of the page, with zero explanation or elaboration on who created the website.