

And even then, the only reason Steam ended support for Windows 7 was because it’s an Electron (Chromium) application. They decided to upgrade their version of Electron, probably to take advantage of newer security fixes in Chromium, which forced them to drop Win7 support because Chromium already had ended support for it.
Because it is torrenting. I clicked on the “More information” link in the popup and:
Source
No idea about copyright though, but I also don’t quite understand the issue there that doesn’t apply to ActivityPub itself too.