I noticed most of that action and had the same reaction, though I hadn't seen the Kissinger bit. My father always said that if you can't say something nice about someone, don't say anything at all. So I won't say anything about Kissinger.

But I wouldn't read too much into the recent placating tone of the Biden administration. What really matters are actions, and the US, as far as I know, hasn't changed course in it's willingness to sell arms or regularly exercise right of passage through the Taiwan Strait. If they were to start cancelling arms sales or quasi-official visits or the regular presence of it's navy in the Strait, then I'd be concerned.

This could just be politics, a biding of time for some reason. Words are cheap.