The testing requirements are the same as those implemented in August 2020. There is no conflicting information. As someone who has flown back and forth and will fly again soon, I am familiar with the requirements and can answer your question, the very same way the Embassy and Consulat did: no changes so far.
You are incorrect about needing a test and result within 72 hours of ENTERING France; it is 72 hours before CHECK IN for your Seattle flight.
If and when the entry requirements change, you'll see it posted on this Forum loud and clear. It will also be on the French Consulate and Embassy website. There are many of us waiting to see if our vaccinations will suffice.
I read the Points Guy this morning; it was a bit of fluff. As for the health pass, many French people have only paper certificates, too. The app used to track cases inside the country will have the ability to upload the paper.
To be honest, the government has a lot more to deal with, so I don't think North American requirements are a pressing priority. They just passed the health passport legislation, they are dealing with implementing it, they have Gen Xers going crazy with the opening of the cafe and restaurant terraces, they are trying to get as many people vaccinated as possible now that they have enough Pfizer and Moderna, and they are watching the variants. We aren't at the top of the government list.
Be prepared to test, but be relieved if the requirements change before your take off.
The health pass: it will be needed if you want to go to a rock concert, sports events or cultural, large theaters, festivals, trade fairs. If you aren't going to any of these, you don't need to be too concerned about Le Pass Sanitaire.