I don't believe any of the reporters put his name out, but others I guess have seen him wearing a mask since when it was first reported on the 31st of August that there was one holdout his name immediately came up. Maybe in some photos or on the sideline of a preseason game, I'm not sure. He's been in the protocol since the 2nd of September, and they know he wont be available for Sunday all signs point to yes, he's the one. If he was vaccinated I believe he would still be able to play Sunday as long as a test came back tomorrow and Saturday, so the fact they have already ruled him out probably means he doesn't have a say in the matter.
Additionally Jourdan has typically added in an (he's vaccinated) whenever listing someone on the Covid list, but didn't for him.
Example:
I'm not calling for people to rake him over the coals, just reading what looks to be pretty clear to me.