I care of none of these things. How they run their business, managing their time and resources, their motives, how, when and what they decide to produce is entirely for them to figure out. All I care about is that a game I might like might be coming out. If and when it's released, if I'm interested in it and if I feel like it then I'm going to play it.
I understand being a little disappointed when you hoped something different but strong reactions come from projecting your own expectations and getting too excited over a practically unsubstantial piece of information.
(considering how communication occurs in the web people should learn not to take anything for granted until its clarified - there's a natural spontaneity, not every little post is a result of carefully considering all potential outcomes. And that's fortunate as I see it as it should allow us to communicate as human beings and not as politicians)
If you don't care about these things and you don't think about how things work in the long-term, that's one thing.
But try to imagine something you DO care about - and then maybe it's clearer.
It's not about taking anything for granted - but about being disappointed because you wanted something else. Disappointment is an emotion beyond our control. If you don't think it's reasonable to express disappointment and explain the reason you're disappointed - then that's on you.
Trying to teach people what they should and shouldn't be disappointed by is fine - if you can live up to it yourself. But since you're a human being - you can't.
Like if you're in love with a girl and she doesn't want anything to do with you. You're not taking her love for granted, but you'd still be really disappointed.
Get it?
It's easy to tell people they shouldn't expect anything at all - but it's also a bit bullshit. We all expect something even if it's not based on sworn oaths.
Like, if your favorite RPG series was suddenly cancelled and turned into exclusively iPad games.
You can harp on about not being disappointed by something like that, but that'd be complete bullshit.
The difference here is simply that you're not invested in Deus Ex like I am - and others are.
So, with a little empathy you might have understood and saved us your sermon.
The only thing they did "wrong" here - to my mind - is making such a big deal out these news.
Not exactly news in the modern industry - but when you couple it with the love of Deus Ex - it shouldn't be impossible to grasp why people are not happy about it.