If I were to speculate at this point on why the American case numbers might still be inflated—and this goes into ground that is too conspiratorial or speculative for me ordinarily—the first thing that comes to mind is that they want to transition power from Biden to Kamala. Biden was needed to get rid of Trump because Kamala is too 'radical' or 'Leftist' for many voters. Getting rid of Trump was needed to give the GOP establishment a chance to retake their party and restore elite control of both parties. But Kamala is who I think they really want, and Biden indeed needs to go now that he's outlived his usefulness.

That would also explain why CNN and perhaps some of the other big media has started turning against him on the Afghan thing as well. Normally the MSM has shielded the Democrats from criticism just as effectively as they subjected Trump to their own, i.e. few mentions of the border crisis, practically no mention of continued Antifa-BLM riots in Salem, etc. past the handover. They tried to paint a picture in which Trump was the source of instability and therefore that Biden's ascension meant a restoration of stability, something easily disproved by looking at websites like riotarchive.com.

See, for example, the latest videos posted there on August 23 in Portland. There's clearly still Antifa-BLM-Black Bloc types clashing with police. As an aside, careful with your volume if you click play on any of those.