It was mentioned as you say, but you are also ignoring that it was not the lead story on any site and in many cases it was the 4/5 story down, and as already stated nearly every paper focused on Salah whilst briefly mentioning in their City write up that we had also got 100 points whilst listing some of the other records broken.
We all know if it was certain other clubs it would of been the lead story everywhere whilst there would of been multiple back pages in the written press devoted to said teams. Call it what you wish, but there is and definitely was yesterday a clear and concerted effort by most british sites/press to play down our many achievements this season and those many achievements certainly did not get the attention they deserve.
Think about it, the first team to get 100 points, only 14 points dropped all season, that alone should of been the lead story everywhere.