So.......what happened about those balloons?

I think they shot them all down in the end "to save face".

However, the reason they were being discovered was said to be that they now have better instruments observing the skies. So why have there been none spied since? Did the Chinese (or whoever) stop sending them because they realised their game was up? Do they now get automatically shot down or disabled at the border? Have the news channels stopped bothering to mention them as they have become commonplace?

All a 5-minute wonder - the fact that the US let it fly from Alaska all the way to South Carolina shows that it was never anything sinister.

They've moved on to TikTok.