Maybe you should switch to airfrance.us or .fr or maybe .uk to see if your experience is better. I used to do that in the past, but .fr has worked for me for quite a while now. I have been booking exclusively ex-LYS if that makes a difference. And of course clear your cookies, etc.

And I don't think my travel experience is all that exceptional. You can find many others who managed to travel with relative ease during the pandemic. We just didn't pay attention to the nonsense on the TV news or social media. And getting tested in NYC was never that difficult. Other US cities YMMV.

But I did have a small issue just yesterday. For my upcoming LYS-CDG-JFK flight, the app pushed out a message saying I needed to add my documentation for travel to the US. So I clicked on the message, and it just brings up the app home page. It doesn't take you to the documentation page. Then I received an email about my documentation, but there also it is without a link to the documentation page. Then I logged into the website and poked around MMB and found the link to add the documentation. My passport is already loaded there, but it was asking me for the nation of residence. For flights to the US I always put in my US address. But in the dropdown list of countries there was no États-Unis, nor USA. I now remember having the same issue on my previous flight to the US. Rather bizarre, but not a big deal as I have to check in bags anyways and can deal with it then.