The complication here is that they sorta pre-sold tickets to the event to their biggest Kickstarter bakers. And the funds from the Kickstarter are supposed to be covering the costs of the live shows. So do they delay indefinitely, or come up with some sort of thing that justifies $475,596 in donations? I don't blame them for just pushing back indefinitely.
That said, they've indicated that the live Stranger Things riff was potentially the first of many such events to keep everyone tided over, so maybe we'll get more cool free shows while we wait.