I think it's to appeal to normies. He doesn't push it onto people. The tone and phrasing he uses seems... forced and disingenuous. Blatantly so.

He knows if he said anything negative about the Vax. It'd be TDS in the news cycle all over again. More ammo for the media

Seems like he's trying real hard to avoiding that. I think he's trying to appeal to center left in their inevitable time of need after Biden ruins everything. He's already got the right Keyed in afterall.