While I can play Age of Empires 2 (2013), Age of Mythology and Age of Empires 3 just fine under Linux, the recently released on Steam AoE:DE, isn’t working.
I know that Linux isn’t a supported platform for Microsoft, but you guys could certainly check if there are some low hanging fruits to get it to work.
https://www.protondb.com/app/1017900
This also worries me that Age Of Empires 2: Definitive Edition will suffer the same fate