TLDR?It's basically that Age of Empires 4 isn't going to come out until 2024 at the earliest, because it takes 2 years to remaster a 20 year old game, and AoE 4 won't come out until AoE 3 remastered comes out.
There is so much worrying about AoE 4, that the guy is calling it shady that MS announced it so early.