I gotta agree with this guy. It just seems a little too outlandish and disconnected. I think a bit part of the Arma series is the "roleplaying" aspect, and it's hard to play the role of something 20 years into the future, especially when there's really nothing around that connects it to the present. Suspension of disbelief is important.
Just look at the US military 20 years ago. Today the military is essentially using the exact same equipment with the addition of a higher A# suffix as it was then. Almost every replacement program with grandiose designs of revolutionizing this or that have failed. And this is the US military we're talking about, the world's foremost expert in spending money to design things for the sake of spending money to design things. I'm pretty sure in the 2030s they'll probably still be using AR-derived rifles.
And yet Iran, which is not really known for its military innovation (how's that embargo going?) has in that same 20 amount of time gone from second-tier military force hopelessly outclassed by even the poorest former Soviet republics into bug-helmeted space warriors whose uniforms look like they were inspired by Enclave Tesla armour? And that tank, that T-100 or whatever with the triangular barrel... why?
That said, we all know it won't take long for modders and mission-makers to start importing Arma 2/modern day stuff into the game, so I don't think it's a terribly big deal. It is pretty fun and new idea and direction for the series, so I (slightly begrudgingly) support it.