COVID had nothing to do with the Snyderverse failing. They gave up on Snyder after BvS turned out to be a dumpster fire.

>ZSJL was put of the big screen

ZSJL was never going to be on the big screen. It's a four hour movie, and if that wasn't enough, all that extra runtime still only made it fractionally better than the mediocrity of Josstice League.