Yeah even though it's not been stated publicly either way, I get the feeling he is just due to couple things that were actually pointed out here a while back before season started.
If I recall correctly, it was a couple pics with a couple players including Josh all next to each other and the ones that weren't vaccinated were wearing mask and Josh wasn't wearing one.
Not that it means anything for sure obviously, but that's why I kinda got the feeling he is when I saw that.