I wouldn’t say they don’t care about what the community want.
I think they only work in secret, so they don’t have to make any promises they may cannot meet.
The first Definitive Edition was a good way to get feedback from the community.
Relic could use this to improve Aoe 4.
Of course it’s also possible they don’t care about the fans, maybe Microsoft only want to make much money.
But these are only speculations, we cannot prove.
I also don’'t like it, how Microsoft announced the game 1,5 years ago and said as good as nothing since then.
But at least I’m sure we get Aoe 4 because they farther make the Aoe Livestreams on Mixer and we heard about people working on Aoe 4 from time to time.