No, not even a little bit silly.
Okay, a few minutes before midnight IS technically still Monday of course - but why be jerks about it? Why not just say ‘available for download Tuesday morning’ and leave it at that, instead of having people checking in and out of the forums all night waiting for it???
If you have a doctor appointment for Monday, and you get there and the receptionist says ‘We were just kidding, we really meant Tuesday!’, what would you think? You wouldn’t be pissed off?
It’s just typical Pixo. If you really want the software, you have to put up with their nonsense I guess. And that’s just the way it is.