For those of us here in the 'states, (or the UK, France, and Mexico), this doesn't really matter. Google officially rolled out RCS/chat support via Messages, so we're all first-class citizens in the future of digital messaging. But this change will leave those that used the hack in unsupported markets out of luck.
Aww...
Some users may want to know about these URLs to block them right away. A user could block update requests to update Microsoft Edge manually when it is appropriate, or disable the experimentation and configuration service to avoid configuration or functionality changes made by Microsoft.
I think I already have ecs.skype.com set in PiHole
[...] the complaints are littered with clearly erroneous URLs that target everything from Netflix and Amazon listings to news reports from sites like Wired, plus content on rival movie portals such as JustWatch and Rotten Tomatoes.