It is great to see that the devs finally try to fix this issue. The calculation will be fixed in during the current server maintainance. This means that there will be no inflation any more in games after the current maintainance!
I only hope they will also take care about the current inflated players (high rating, low win rate). They said
but this takes really really long in my opinion. In their blog they speak about
I think this is really needed. I posted that under the blog as well ([BLOG] Age of Empires II: Definitive Edition — Updates to Ranked Team Game ELO Acquisition - #3 by WoodsierCorn696)
I am glad the devs do take these issues seriously. It will make playing the game much more fun for many players. Fixing this issue, will also help with the number of Alt+F4’s, so that is great as well.