Quite agree. Radioastronomy is used to hunt for sun-side rocks, which are difficult or impossible to spot using visible light (because of the Sun swamping everything else). The Earth gives a come-hither to many an asteroid, tugging at them each time one passes or we pass one. Over time, some of those will come down.
Ten years or so ago, fired by the SL-9 impacts, there was a surge of interest in NEOs. For years thereafter the estimates of the number of unknown rocks was quite a lot larger than it is now. Partly that was due to grant-seeking. But the current accepted estimate of the numbers seems far too low.
The thing that is causing a lot of consternation among the scientists is that they cannot seem to nail down the size. While the official releases put it around 400m, it could easily be as small as a couple hundred meters or as large as a kilometer in diameter (now that would be a country killer).
I'm getting a bunch of NEO scientist traffic on this. Pity there isn't an official thread for tracking this particular asteroid.