Can you just use a can of that air in a can? That should help you get some of the dust out without having to unscrew anything.
I wouldent. One thing is the only open area to spray air in is above the fan. This is going to make the fan spin at a very fast rpm level which could damage your fan. I would imagine some dust would disperse out but it would more than likely just re cycle dust around in your box.
I wouldent be to concerned about it. I'm sure M$ took this in to account as its basically an extention of a cable box lol. If anything wait till your warranty is up then disassemble it. As I've seen its pretty easy to open the XB1 up.
A air compressor would be the worst thing to use. Unless u can wedge something to make the fan stop spinning. U would for sure burn your fan out!
Are you sure of that?
The fan already spins extremely fast as it is, I don't think the blast is powerful enough to damage it, in fact, it would be much more likely to be damaged if you wedge something in there like you say...