The recent admission that the three non-Chinese objects were probably benign, coupled with the lack of further heroic engagements over the last few days, leads one to suspect that a further paradigm shift has occurred.
1) US is caught unawares by Chinese balloon. National anxiety is stoked, calls for robust response, balloon is shot down.
2) NORAD changes filter settings on its radars and immediately starts picking up all sorts of shit "out there". Queue the several subsequent engagements as national hysteria persists.
3) As analysis begins to catch up and immediate hysteria subsides, the narratives around both the initial Chinese balloon and subsequent objects begin to change.
Perhaps NORAD has advised that it will need a lot more flight hours and Sidewinders if it is going to investigate every flock of birds and shoot down everything it can't positively identify.
It's tempting to derive some satisfaction from observing the US government and society flail around like this, but it should also serve as a sobering reminder about the potential for miscalculation across the full breadth of US-China relations. Governments must often act on incomplete information and their decisions are shaped by domestic political imperatives.
Many people downplay the risks of conflict between the USA and China, specifically the risk of nuclear escalation. Underpinning this attitude is an implicit or explicit belief in a kind of cool rationality fed by accurate and complete information. The balloon saga is a fairly low-cost illustration of how misguided such assumptions are.
1. The US wasn't caught unaware by the first Balloon, they admitted to tracking it when it left Hainan and saw it go to Guam then Alaska. The balloon was shot down as a distraction for Blinken's rejected trip to China.
2. NORAD didn't change any filter settings, they clearly know what is a big weather balloon and what is a small science project, otherwise how could they have known at least 10 Chinese weather balloon transited US before. The defense dept is just playing along with the politicians.
3. Those three Balloons were shot down for Biden to look tough on China to counter the GOP, then claiming it accidentally shot civilian balloons was a way for US to walk back its tough China Spy Balloon Hysteria position.