I don't know how temporary anything is, but Exodus have done very little on social media since this started. Ask each member questions is a simple and easy connection method that will create traffic, allow interaction directly with the band and I'd reckon it would be more watched than Zetro's YT channel. Once they get back on the road arguably the need for such interaction is less however whether that makes this sort of thing any more temporary I don't know.
People like Bittner, and Ozzy, bands like Megadeth, Flots and Maiden barely let a few days go by without something on social media and often it's an interactive type of thing. For the likes of them I don't think interacting with the fans on social media is a temporary thing, but with Exodus and Testament it definitely appears to be