Funny Prank or PR stunt?

maybe... I'm wondering how many people walked into the room and said "Hey kickass TV!!"

No you are just vastly underestimating the difficulty of keeping track of celestial objects that small and overestimating how much effort/money people put into it.

For objects smaller than a kilometer and bigger than a hundred meters there have been cases of them being detected only after they passed by the closest point to Earth in their trajectory. When you get into smaller than a hundred meters it is even worse with the best proposed systems(which are far better than the ones in practice) estimating about 50% of meteors detected.

Just recall Chelyabinsk meteor that hit Russia last year it measured about 17-20 meters and if the angle wasn't so shallow that it detonated far above the ground it would have destroyed quite a bit around the area(hitting a major city, as small the odds are considering the size of the planet, would mean easily a death toll of millions). If you told people to check exactly where it was coming from we would still have been unable to detect it due to it's trajectory meaning the Sun was preventing it from being seen.

Basically in general the only meteors we would have advanced warning of are the big ones which an advanced warning is least useful for thus we are relying on luck. I figure at some point a meteor will hit somewhere that will cause a decent damage and/or death toll and then we will finally take the threat seriously, hopefully it won't be one too big though.

more like 7 months, but so what.

hahah nice, that was pretty good